Daz Studio Pro BETA - version 4.9.3.166! Release Candidate 5 (*UPDATED*)

nicstt

I'm using 372.90; have been since I restored from a disk image a few weeks ago. No issues.

I use 9 series cards so can't offer any insight on the 10 series perfromance, and I use Windows 8.0.

... And as usual, I'll avoid upgrading NVidia drivers (as they like to break stuff ) as everything seems to be working fine. I'm using a previous beta, and am considering trying the latest; I have the one I'm using and the latest downloaded so can revert.

nicstt

Previous version - forgot to get which before uninstalling, but fairly certain the previous one

2016-10-27 11:19:03.859 Finished Rendering
2016-10-27 11:19:03.897 Total Rendering Time: 19 minutes 2.71 seconds

version 4.9.3.117

2016-10-27 12:00:34.878 Finished Rendering
2016-10-27 12:00:34.914 Total Rendering Time: 17 minutes 12.62 seconds

Used the same scene, and in both cases I started rendering with a previous render still open to pevent scene loading to influence the times unduly. Rendered on a 980ti.

Two minutes difference is nice, but with just the one render, not useful for comparrison purposes.

jestmart

Getting the illegal instruction error on CPU only renders every time on an AMD everything laptop so don't think it is entirely CUDA related.

D.Robinson

mrron2 said:

D.Robinson said:

I have a crash everytime i try to render with Iray,, or use Iray preview, the crash error is this.

DAZStudio.exe caused ILLEGAL_INSTRUCTION in module "C:\Program Files\DAZ 3D\DAZStudio4 Public Build\libs\iray\libneuray.dll" at 0033:00000000E11B0728, mi_neuray_factory()+7334328 byte(s)

 

AMD 965 black edition, EVGA GTX 670, latest nvidia drivers. 16 gigs of ram, Windows 7 Pro

Previous BETA build worked fine....this just started with latest Beta build so basically i cannot do anything at this point. Thing is i can use the Iray preview and render with just HDRi, but as soon as i put a figure in the scene this happens

Daniel

P.S. I dont know if this has anything to do with the crash, but i looked at the log file after i tried to use the Iray view and it says its using Cuda 3.0 My understanding is that it needs at least Cuda 7.0 to work. Its a bad report though because in my properties tab for Nvida devices it clearly says Cuda version 8.0

Same Problem. I use the 375.63 Driver, wich one use you? Maybe we need to downgrade to or 372.xx

I was using 372.xx, and it crashed so i upgraded to latest driver thinking it needed the cuda 8.0 upgrade to work. So its not a driver issue.

prixat

Does keeping Optix off do anything for those 'illegal instruction' errors?

D.Robinson

jestmart said:

Getting the illegal instruction error on CPU only renders every time on an AMD everything laptop so don't think it is entirely CUDA related.

I think you are right, i tried unticking the GPU options and ticking CPU only and tried to do CPU render, it crashed immediately like before with same error. I am beginning to suspect its an AMD issue? Maybe..

Daniel

mrron2

mrron2 said:

D.Robinson said:

I have a crash everytime i try to render with Iray,, or use Iray preview, the crash error is this.

DAZStudio.exe caused ILLEGAL_INSTRUCTION in module "C:\Program Files\DAZ 3D\DAZStudio4 Public Build\libs\iray\libneuray.dll" at 0033:00000000E11B0728, mi_neuray_factory()+7334328 byte(s)

 

AMD 965 black edition, EVGA GTX 670, latest nvidia drivers. 16 gigs of ram, Windows 7 Pro

Previous BETA build worked fine....this just started with latest Beta build so basically i cannot do anything at this point. Thing is i can use the Iray preview and render with just HDRi, but as soon as i put a figure in the scene this happens

Daniel

P.S. I dont know if this has anything to do with the crash, but i looked at the log file after i tried to use the Iray view and it says its using Cuda 3.0 My understanding is that it needs at least Cuda 7.0 to work. Its a bad report though because in my properties tab for Nvida devices it clearly says Cuda version 8.0

Same Problem. I use the 375.63 Driver, wich one use you? Maybe we need to downgrade to or 372.xx

 

D.Robinson said:

jestmart said:

Getting the illegal instruction error on CPU only renders every time on an AMD everything laptop so don't think it is entirely CUDA related.

I think you are right, i tried unticking the GPU options and ticking CPU only and tried to do CPU render, it crashed immediately like before with same error. I am beginning to suspect its an AMD issue? Maybe..

Daniel

I think so too. I can Render with my 1080 but without textures. When i load Textures on models daz chrashes

D.Robinson

mrron2 said:

mrron2 said:

D.Robinson said:

I have a crash everytime i try to render with Iray,, or use Iray preview, the crash error is this.

DAZStudio.exe caused ILLEGAL_INSTRUCTION in module "C:\Program Files\DAZ 3D\DAZStudio4 Public Build\libs\iray\libneuray.dll" at 0033:00000000E11B0728, mi_neuray_factory()+7334328 byte(s)

 

AMD 965 black edition, EVGA GTX 670, latest nvidia drivers. 16 gigs of ram, Windows 7 Pro

Previous BETA build worked fine....this just started with latest Beta build so basically i cannot do anything at this point. Thing is i can use the Iray preview and render with just HDRi, but as soon as i put a figure in the scene this happens

Daniel

P.S. I dont know if this has anything to do with the crash, but i looked at the log file after i tried to use the Iray view and it says its using Cuda 3.0 My understanding is that it needs at least Cuda 7.0 to work. Its a bad report though because in my properties tab for Nvida devices it clearly says Cuda version 8.0

Same Problem. I use the 375.63 Driver, wich one use you? Maybe we need to downgrade to or 372.xx

 

D.Robinson said:

jestmart said:

Getting the illegal instruction error on CPU only renders every time on an AMD everything laptop so don't think it is entirely CUDA related.

I think you are right, i tried unticking the GPU options and ticking CPU only and tried to do CPU render, it crashed immediately like before with same error. I am beginning to suspect its an AMD issue? Maybe..

Daniel

I think so too. I can Render with my 1080 but without textures. When i load Textures on models daz chrashes

Wow thats actually quite telling. I am not sure what it means, but i did an experiment and loaded a Genesis 2 female into the scene, then went to the editor and removed all the textures then used the Iray preview...and it worked no crash, did a test render with a figure with no textures and it worked. So the problem doesnt lay with the figures themselves but with how it does textures. I noticed something in the log file about incorrect sRGB being used. I wonder if this is the culprit...not that i know anything bout how works but at least its good information!

 

Viewing the log file i got alot of these WARNING: libpng warning: iCCP: known incorrect sRGB profile. I dont know if it means anything, but it seems to be related to the PNG library that load textures?

D.Robinson

prixat said:

Does keeping Optix off do anything for those 'illegal instruction' errors?

Doesnt seem to make a difference.

mrron2

D.Robinson said:

mrron2 said:

mrron2 said:

D.Robinson said:

I have a crash everytime i try to render with Iray,, or use Iray preview, the crash error is this.

DAZStudio.exe caused ILLEGAL_INSTRUCTION in module "C:\Program Files\DAZ 3D\DAZStudio4 Public Build\libs\iray\libneuray.dll" at 0033:00000000E11B0728, mi_neuray_factory()+7334328 byte(s)

 

AMD 965 black edition, EVGA GTX 670, latest nvidia drivers. 16 gigs of ram, Windows 7 Pro

Previous BETA build worked fine....this just started with latest Beta build so basically i cannot do anything at this point. Thing is i can use the Iray preview and render with just HDRi, but as soon as i put a figure in the scene this happens

Daniel

P.S. I dont know if this has anything to do with the crash, but i looked at the log file after i tried to use the Iray view and it says its using Cuda 3.0 My understanding is that it needs at least Cuda 7.0 to work. Its a bad report though because in my properties tab for Nvida devices it clearly says Cuda version 8.0

Same Problem. I use the 375.63 Driver, wich one use you? Maybe we need to downgrade to or 372.xx

 

D.Robinson said:

jestmart said:

Getting the illegal instruction error on CPU only renders every time on an AMD everything laptop so don't think it is entirely CUDA related.

I think you are right, i tried unticking the GPU options and ticking CPU only and tried to do CPU render, it crashed immediately like before with same error. I am beginning to suspect its an AMD issue? Maybe..

Daniel

I think so too. I can Render with my 1080 but without textures. When i load Textures on models daz chrashes

Wow thats actually quite telling. I am not sure what it means, but i did an experiment and loaded a Genesis 2 female into the scene, then went to the editor and removed all the textures then used the Iray preview...and it worked no crash, did a test render with a figure with no textures and it worked. So the problem doesnt lay with the figures themselves but with how it does textures. I noticed something in the log file about incorrect sRGB being used. I wonder if this is the culprit...not that i know anything bout how works but at least its good information!

 

Viewing the log file i got alot of these WARNING: libpng warning: iCCP: known incorrect sRGB profile. I dont know if it means anything, but it seems to be related to the PNG library that load textures?

 

D.Robinson said:

mrron2 said:

mrron2 said:

D.Robinson said:

I have a crash everytime i try to render with Iray,, or use Iray preview, the crash error is this.

DAZStudio.exe caused ILLEGAL_INSTRUCTION in module "C:\Program Files\DAZ 3D\DAZStudio4 Public Build\libs\iray\libneuray.dll" at 0033:00000000E11B0728, mi_neuray_factory()+7334328 byte(s)

 

AMD 965 black edition, EVGA GTX 670, latest nvidia drivers. 16 gigs of ram, Windows 7 Pro

Previous BETA build worked fine....this just started with latest Beta build so basically i cannot do anything at this point. Thing is i can use the Iray preview and render with just HDRi, but as soon as i put a figure in the scene this happens

Daniel

P.S. I dont know if this has anything to do with the crash, but i looked at the log file after i tried to use the Iray view and it says its using Cuda 3.0 My understanding is that it needs at least Cuda 7.0 to work. Its a bad report though because in my properties tab for Nvida devices it clearly says Cuda version 8.0

Same Problem. I use the 375.63 Driver, wich one use you? Maybe we need to downgrade to or 372.xx

 

D.Robinson said:

jestmart said:

Getting the illegal instruction error on CPU only renders every time on an AMD everything laptop so don't think it is entirely CUDA related.

I think you are right, i tried unticking the GPU options and ticking CPU only and tried to do CPU render, it crashed immediately like before with same error. I am beginning to suspect its an AMD issue? Maybe..

Daniel

I think so too. I can Render with my 1080 but without textures. When i load Textures on models daz chrashes

Wow thats actually quite telling. I am not sure what it means, but i did an experiment and loaded a Genesis 2 female into the scene, then went to the editor and removed all the textures then used the Iray preview...and it worked no crash, did a test render with a figure with no textures and it worked. So the problem doesnt lay with the figures themselves but with how it does textures. I noticed something in the log file about incorrect sRGB being used. I wonder if this is the culprit...not that i know anything bout how works but at least its good information!

 

Viewing the log file i got alot of these WARNING: libpng warning: iCCP: known incorrect sRGB profile. I dont know if it means anything, but it seems to be related to the PNG library that load textures?

I Look later. I Hope we find the Problem Ort the Developers

Trigger_31

What's really weird is that when i load an old simple IRAY test scene with some primitives it renders without crash. I can even apply new shaders to the objects. But as soon as something from the runtimes is added, it crashes.

mrron2

vtx32_5a16989487 said:

What's really weird is that when i load an old simple IRAY test scene with some primitives it renders without crash. I can even apply new shaders to the objects. But as soon as something from the runtimes is added, it crashes.

Did you have a AMD CPU?

Trigger_31

mrron2 said:

vtx32_5a16989487 said:

What's really weird is that when i load an old simple IRAY test scene with some primitives it renders without crash. I can even apply new shaders to the objects. But as soon as something from the runtimes is added, it crashes.

Did you have a AMD CPU?

Nope , it's been Intel Inside for all PCs i ever owned.

Richard Haseltine

The sRGB warning is probably harmless - it seems that the library used for image handling is fussy, but it affects all users and has been doing so for a while so I doubt it is implicated here.

mrron2

mrron2 said:

D.Robinson said:

mrron2 said:

mrron2 said:

D.Robinson said:

I have a crash everytime i try to render with Iray,, or use Iray preview, the crash error is this.

DAZStudio.exe caused ILLEGAL_INSTRUCTION in module "C:\Program Files\DAZ 3D\DAZStudio4 Public Build\libs\iray\libneuray.dll" at 0033:00000000E11B0728, mi_neuray_factory()+7334328 byte(s)

 

AMD 965 black edition, EVGA GTX 670, latest nvidia drivers. 16 gigs of ram, Windows 7 Pro

Previous BETA build worked fine....this just started with latest Beta build so basically i cannot do anything at this point. Thing is i can use the Iray preview and render with just HDRi, but as soon as i put a figure in the scene this happens

Daniel

P.S. I dont know if this has anything to do with the crash, but i looked at the log file after i tried to use the Iray view and it says its using Cuda 3.0 My understanding is that it needs at least Cuda 7.0 to work. Its a bad report though because in my properties tab for Nvida devices it clearly says Cuda version 8.0

Same Problem. I use the 375.63 Driver, wich one use you? Maybe we need to downgrade to or 372.xx

 

D.Robinson said:

jestmart said:

Getting the illegal instruction error on CPU only renders every time on an AMD everything laptop so don't think it is entirely CUDA related.

I think you are right, i tried unticking the GPU options and ticking CPU only and tried to do CPU render, it crashed immediately like before with same error. I am beginning to suspect its an AMD issue? Maybe..

Daniel

I think so too. I can Render with my 1080 but without textures. When i load Textures on models daz chrashes

Wow thats actually quite telling. I am not sure what it means, but i did an experiment and loaded a Genesis 2 female into the scene, then went to the editor and removed all the textures then used the Iray preview...and it worked no crash, did a test render with a figure with no textures and it worked. So the problem doesnt lay with the figures themselves but with how it does textures. I noticed something in the log file about incorrect sRGB being used. I wonder if this is the culprit...not that i know anything bout how works but at least its good information!

 

Viewing the log file i got alot of these WARNING: libpng warning: iCCP: known incorrect sRGB profile. I dont know if it means anything, but it seems to be related to the PNG library that load textures?

 

D.Robinson said:

mrron2 said:

mrron2 said:

D.Robinson said:

I have a crash everytime i try to render with Iray,, or use Iray preview, the crash error is this.

DAZStudio.exe caused ILLEGAL_INSTRUCTION in module "C:\Program Files\DAZ 3D\DAZStudio4 Public Build\libs\iray\libneuray.dll" at 0033:00000000E11B0728, mi_neuray_factory()+7334328 byte(s)

 

AMD 965 black edition, EVGA GTX 670, latest nvidia drivers. 16 gigs of ram, Windows 7 Pro

Previous BETA build worked fine....this just started with latest Beta build so basically i cannot do anything at this point. Thing is i can use the Iray preview and render with just HDRi, but as soon as i put a figure in the scene this happens

Daniel

P.S. I dont know if this has anything to do with the crash, but i looked at the log file after i tried to use the Iray view and it says its using Cuda 3.0 My understanding is that it needs at least Cuda 7.0 to work. Its a bad report though because in my properties tab for Nvida devices it clearly says Cuda version 8.0

Same Problem. I use the 375.63 Driver, wich one use you? Maybe we need to downgrade to or 372.xx

 

D.Robinson said:

jestmart said:

Getting the illegal instruction error on CPU only renders every time on an AMD everything laptop so don't think it is entirely CUDA related.

I think you are right, i tried unticking the GPU options and ticking CPU only and tried to do CPU render, it crashed immediately like before with same error. I am beginning to suspect its an AMD issue? Maybe..

Daniel

I think so too. I can Render with my 1080 but without textures. When i load Textures on models daz chrashes

Wow thats actually quite telling. I am not sure what it means, but i did an experiment and loaded a Genesis 2 female into the scene, then went to the editor and removed all the textures then used the Iray preview...and it worked no crash, did a test render with a figure with no textures and it worked. So the problem doesnt lay with the figures themselves but with how it does textures. I noticed something in the log file about incorrect sRGB being used. I wonder if this is the culprit...not that i know anything bout how works but at least its good information!

 

Viewing the log file i got alot of these WARNING: libpng warning: iCCP: known incorrect sRGB profile. I dont know if it means anything, but it seems to be related to the PNG library that load textures?

I Look later. I Hope we find the Problem Ort the Developers

http://download.daz3d.com/forums/discussion/108471/what-does-this-mean

 

looks like the Same problem

mrron2

vtx32_5a16989487 said:

mrron2 said:

vtx32_5a16989487 said:

What's really weird is that when i load an old simple IRAY test scene with some primitives it renders without crash. I can even apply new shaders to the objects. But as soon as something from the runtimes is added, it crashes.

Did you have a AMD CPU?

Nope , it's been Intel Inside for all PCs i ever owned.

When you have the same Problem, then its not a AMD problem

mrron2

Hello i have still a crash when i was rendering in Iray.

What does it mean? I have 0 CUDAS? And Why Geometry memory consumption: 14.7739 MiB?

Rendering in NVIDIA Iray

 

Compiling Shaders - 0/1

Rendering image

Rendering...

Iray VERBOSE - module:category(IRAY:RENDER): 1.4 IRAY rend progr: CUDA device 0 (GeForce GTX 1080): Processing scene...

Iray VERBOSE - module:category(IRAY:RENDER): 1.7 IRAY rend stat : Geometry memory consumption: 14.7739 MiB (device 0), 0 B (host)

DoctorJellybean

mrron2 said:

Hello i have still a crash when i was rendering in Iray.

What does it mean? I have 0 CUDAS? And Why Geometry memory consumption: 14.7739 MiB?

Rendering in NVIDIA Iray

 

Compiling Shaders - 0/1

Rendering image

Rendering...

Iray VERBOSE - module:category(IRAY:RENDER): 1.4 IRAY rend progr: CUDA device 0 (GeForce GTX 1080): Processing scene...

Iray VERBOSE - module:category(IRAY:RENDER): 1.7 IRAY rend stat : Geometry memory consumption: 14.7739 MiB (device 0), 0 B (host)

Which version of the NVIDIA driver do you have installed?

mrron2

DoctorJellybean said:

mrron2 said:

Hello i have still a crash when i was rendering in Iray.

What does it mean? I have 0 CUDAS? And Why Geometry memory consumption: 14.7739 MiB?

Rendering in NVIDIA Iray

 

Compiling Shaders - 0/1

Rendering image

Rendering...

Iray VERBOSE - module:category(IRAY:RENDER): 1.4 IRAY rend progr: CUDA device 0 (GeForce GTX 1080): Processing scene...

Iray VERBOSE - module:category(IRAY:RENDER): 1.7 IRAY rend stat : Geometry memory consumption: 14.7739 MiB (device 0), 0 B (host)

Which version of the NVIDIA driver do you have installed?

The newest 375.63-desktop-win10-64bit-international-whql  

kyoto kid

...that's bad if it crashes in CPU mode if you have an AMD CPU. I can understand with GPU mode if you have a Radeon or FirePro (but then it should automatically dump to the CPU like it does when you run out of VRAM).

DoctorJellybean

mrron2 said:

DoctorJellybean said:

mrron2 said:

Hello i have still a crash when i was rendering in Iray.

What does it mean? I have 0 CUDAS? And Why Geometry memory consumption: 14.7739 MiB?

Rendering in NVIDIA Iray

 

Compiling Shaders - 0/1

Rendering image

Rendering...

Iray VERBOSE - module:category(IRAY:RENDER): 1.4 IRAY rend progr: CUDA device 0 (GeForce GTX 1080): Processing scene...

Iray VERBOSE - module:category(IRAY:RENDER): 1.7 IRAY rend stat : Geometry memory consumption: 14.7739 MiB (device 0), 0 B (host)

Which version of the NVIDIA driver do you have installed?

The newest 375.63-desktop-win10-64bit-international-whql  

Try the previous version (373.06). Do a clean driver install if possible.

mrron2

kyoto kid said:

...that's bad if it crashes in CPU mode if you have an AMD CPU. I can understand with GPU mode if you have a Radeon or FirePro (but then it should automatically dump to the CPU like it does when you run out of VRAM).

I have a GTX 1080 with 8GB and a AMD 6core and 12 GB RAM . With my old GTX 970 rendering makes no problem and they have only 4GB (3,5) VRAM

mrron2

DoctorJellybean said:

mrron2 said:

DoctorJellybean said:

mrron2 said:

Hello i have still a crash when i was rendering in Iray.

What does it mean? I have 0 CUDAS? And Why Geometry memory consumption: 14.7739 MiB?

Rendering in NVIDIA Iray

 

Compiling Shaders - 0/1

Rendering image

Rendering...

Iray VERBOSE - module:category(IRAY:RENDER): 1.4 IRAY rend progr: CUDA device 0 (GeForce GTX 1080): Processing scene...

Iray VERBOSE - module:category(IRAY:RENDER): 1.7 IRAY rend stat : Geometry memory consumption: 14.7739 MiB (device 0), 0 B (host)

Which version of the NVIDIA driver do you have installed?

The newest 375.63-desktop-win10-64bit-international-whql  

Try the previous version (373.06). Do a clean driver install if possible.

ok,  i have installed the newest clean too, so i try 373.06

kyoto kid

mrron2 said:

kyoto kid said:

...that's bad if it crashes in CPU mode if you have an AMD CPU. I can understand with GPU mode if you have a Radeon or FirePro (but then it should automatically dump to the CPU like it does when you run out of VRAM).

I have a GTX 1080 with 8GB and a AMD 6core and 12 GB RAM . With my old GTX 970 rendering makes no problem and they have only 4GB (3,5) VRAM

...but it shouldn't crash in CPU mode like D.Robinson reported.

mrron2

kyoto kid said:

mrron2 said:

kyoto kid said:

...that's bad if it crashes in CPU mode if you have an AMD CPU. I can understand with GPU mode if you have a Radeon or FirePro (but then it should automatically dump to the CPU like it does when you run out of VRAM).

I have a GTX 1080 with 8GB and a AMD 6core and 12 GB RAM . With my old GTX 970 rendering makes no problem and they have only 4GB (3,5) VRAM

...but it shouldn't crash in CPU mode like D.Robinson reported.

It chrash in GPU only mode too

kyoto kid

...so Iray doesn't like anything from AMD then, and here I was looking at their forthcoming 16 core (32 thread) CPUs.

Crikey, talk about proprietary on the expensive side.

mrron2

DoctorJellybean said:

mrron2 said:

DoctorJellybean said:

mrron2 said:

Hello i have still a crash when i was rendering in Iray.

What does it mean? I have 0 CUDAS? And Why Geometry memory consumption: 14.7739 MiB?

Rendering in NVIDIA Iray

 

Compiling Shaders - 0/1

Rendering image

Rendering...

Iray VERBOSE - module:category(IRAY:RENDER): 1.4 IRAY rend progr: CUDA device 0 (GeForce GTX 1080): Processing scene...

Iray VERBOSE - module:category(IRAY:RENDER): 1.7 IRAY rend stat : Geometry memory consumption: 14.7739 MiB (device 0), 0 B (host)

Which version of the NVIDIA driver do you have installed?

The newest 375.63-desktop-win10-64bit-international-whql  

Try the previous version (373.06). Do a clean driver install if possible.

Thanx. But i have the same problem. I hope the Developers fix this or i must upgrade to Intel :-(

mrron2

mrron2 said:

DoctorJellybean said:

mrron2 said:

DoctorJellybean said:

mrron2 said:

Hello i have still a crash when i was rendering in Iray.

What does it mean? I have 0 CUDAS? And Why Geometry memory consumption: 14.7739 MiB?

Rendering in NVIDIA Iray

 

Compiling Shaders - 0/1

Rendering image

Rendering...

Iray VERBOSE - module:category(IRAY:RENDER): 1.4 IRAY rend progr: CUDA device 0 (GeForce GTX 1080): Processing scene...

Iray VERBOSE - module:category(IRAY:RENDER): 1.7 IRAY rend stat : Geometry memory consumption: 14.7739 MiB (device 0), 0 B (host)

Which version of the NVIDIA driver do you have installed?

The newest 375.63-desktop-win10-64bit-international-whql  

Try the previous version (373.06). Do a clean driver install if possible.

Thanx. But i have the same problem. I hope the Developers fix this or i must upgrade to Intel :-(

LOGFILE : 2016-10-27 22:58:44.244     GPU: 1 - GeForce GTX 1080
2016-10-27 22:58:44.244     Memory Size: 7.9 GB
2016-10-27 22:58:44.244     Clock Rate: 1847500 KH
2016-10-27 22:58:44.244     Multi Processor Count: 20
2016-10-27 22:58:44.244     Cuda Version: 6.1   <------?????

Jack238

kyoto kid said:

...so Iray doesn't like anything from AMD then, and here I was looking at their forthcoming 16 core (32 thread) CPUs.

Crikey, talk about proprietary on the expensive side.

I am rendering with an AMD 8 core CPU and Nvidia GPU using the latest Nvidia drivers and no problem (knocking on everything wooden around me) so I cannot doubt this is an AMD issue.

kyoto kid

...did you try rendering on the CPU only?