Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: Quadro M4000/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 411.63
Broken: version: 2.82 (sub 3), branch: master, commit date: 2019-11-30 17:33, hash: rBf1ac64921b49
Short description of error
Cycles appear to produce different random values for CUDA tiles and CPU tiles.
Exact steps for others to reproduce the error
Images of the bug in isolation.
CPU Only - Fine:
CUDA Only - Fine:
CPU + CUDA - Bugs out:
In addition, I had some even more strange artefacts in a real render.
The random effect is more subtle here, but it's there. But the other ones I can't really reproduce, not sure what is going on with that:
I can't update drivers, due to other software requiring certain certified drivers. Windows 10 is up to date.