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So I assumed, the issue was something with other unknown variables associated with the install of the OS or DAZ. But then I tried imaging the SSD with a clone of the SSD from the other Mac Pro, so they both have the exact same OS and Daz and CUDA and everything. The issue persisted, and I was beginning to think it was my graphics card. I even tried to downgrade to 4.12 by copying my version of 4.12 from my other Mac Pro which had not yet updated to 4.14. I tried clearing the DAZ3d application support and preferences, creating a new user account with fresh settings, and reinstalling Daz and Daz central. When I upgraded one to 4.14 recently on one of them, it completely broke GPU rendering.
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They have been running 4.12 (and 4.12.1). I have 2 Mac Pros (5,1 and 3,1) each with a GTX 1070.
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