Change Details

**System Information** Operating system: Windows-10-10.0.18362 64 Bits Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.70 **Blender Version** Broken: version: 2.81 (sub 3), branch: master, commit date: 2019-08-26 09:27, hash: `rB277875492564` Worked: 2.8 official **Short description of error** It seems multiple builds (even most recent) of 2.81 seem to drastically reduce the GPU utilization during GPU render. I've tested this on two computers with different hardware and both give the same results: utilization remains tiny even if the render is dedicated to one GPU tile and the utilization remains well below 20%. Looking at Windows task manager it seems a thread from the CPU is utilized instead. {F7704757} {F7704759} **Exact steps for others to reproduce the error** Enable GPU/CPU devices in preferences, set Cycles render to GPU render. Render.

**System Information** Operating system: Windows-10-10.0.18362 64 Bits Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.70 **Blender Version** Broken: version: 2.81 (sub 3), branch: master, commit date: 2019-08-26 09:27, hash: `rB277875492564` **Short description of error** It seems multiple builds (even most recent) of 2.81 seem to drastically reduce the GPU utilization during GPU render. I've tested this on two computers with different hardware and both give the same results: utilization remains tiny even if the render is dedicated to one GPU tile and the utilization remains well below 20%. Looking at Windows task manager it seems a thread from the CPU is utilized instead. {F7704757} {F7704759} **Exact steps for others to reproduce the error** Enable GPU/CPU devices in preferences, set Cycles render to GPU render. Render.

**System Information** Operating system: Windows-10-10.0.18362 64 Bits Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.70 **Blender Version** Broken: version: 2.81 (sub 3), branch: master, commit date: 2019-08-26 09:27, hash: `rB277875492564` Worked: 2.8 official **Short description of error** It seems multiple builds (even most recent) of 2.81 seem to drastically reduce the GPU utilization during GPU render. I've tested this on two computers with different hardware and both give the same results: utilization remains tiny even if the render is dedicated to one GPU tile and the utilization remains well below 20%. Looking at Windows task manager it seems a thread from the CPU is utilized instead. {F7704757} {F7704759} **Exact steps for others to reproduce the error** Enable GPU/CPU devices in preferences, set Cycles render to GPU render. Render.