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IRay render keeps falling back to CPU regardless of size (FIXED)

hesperasmithhesperasmith Posts: 52
edited February 2019 in Technical Help (nuts n bolts)

I have a scene that has previously rendered fine, but now whenever I try to render it, it falls back to CPU before the first iteration. 

The scene (optimised) is less than 2GB, I am using 2x1070s (8GB each) and I have checked in GPU-Z that there is more than enough free to run the render (3x over), restarted studio, cards, computer etc, all to no avail.

The only clue I have is that if I turn off one particular piece of hair, it will render fine, but that same piece of hair in that same scene rendered fine yesterday. 

Post edited by hesperasmith on

Comments

  • kenshaw011267kenshaw011267 Posts: 3,805

    Did you recently update your video driver?

  • hesperasmithhesperasmith Posts: 52

    Ah yes I did, is the most recent GeForce driver causing problems? 

  • hesperasmithhesperasmith Posts: 52

    Ok yeah that was the problem, I feel dumb, rolled back the driver and it works fine, I wish they wouldn't break stuff like that. 

  • mechengineer97mechengineer97 Posts: 116

    Nvidia Drivers are a pain.  When I first got my 3 GTX970's and all the driver headaches that ensued, I vowed never to buy Nvidia again.  Then my job required the use of iRay, and I had no choice but to get the 2080 Ti.  The only driver I dare to use right now is from November.  The latest one causes the main HDMI connection to only work with inputs at 30Hz.

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