Why, when I do an iRay render with speed optimize, do I go from 59GB SSD free to 39GB SSD free?

nonesuch00

Why, when I do an iRay render with speed optimize, do I go from 59GB SSD free to 39GB SSD free? It's worse when the scene is optimzed for memory. And the disappeared SSD space stays gone after I exit DAZ Studio too. A reboot will recover most of it but seemingly not all of it for some reason. I know it's tied up in the Windows 10 page files dynamically allocating virtual RAM but really 20GB missing SSD space is a bug not a feature.

+++++

OK, so I rebooted and the 20GB missing SSD space stays missing.  My pagefile.sys is at 16GB, my hyberfil.sys is at 6GB, and my swapfil.sys is at 16MB. Used space in the User AppData roaming DAZ 3D is only 1.5GB which must mostly be cms database usage. 

I guess I was under impression that pagefil.sys was at 16GB from the get go when I installed windows but apparently the majority of it on got allocated when I render in DAZ Studio and gets kept of part of Windows 10 OS usage scenario optimization.

That's fine if more SSD disk space doesn't disappear from 39GB to 19GB next time I do a DAZ Studio render. It shouldn't but I'll have to pay attention. I should have paid attention before I rendered for the 1st time. I could manually allocate page file space to reclaim that space & then change back to system managed space to what it again but I think it's DAZ Studio, Blender renders and similar products will probably do the same.