Desktop Windows Manager using 100% of my GPU
On 10/14/2022 at 12:31 PM, Zando_ said:To answer that I'd have to know what the heck Task Manager is calling 100% GPU usage in respect to Desktop Windows Manager. Like I said above, it'll see 3D render and CUDA render as different usages (and other capabilities of the GPU as well), and occasionally not at all. IIRC I've had games where the GPU was at full load in HWiNFO64 and MSI Afterburner's OSD, both showing me pulling full power target/100% usage/full boost clocks, my killawatt confirmed I was pulling load wattage from the wall, and Task Manager said 0% GPU usage.
I guess to sum it up, Task Manager is good for managing tasks (thus the name), services if you have the nice new W11 22H2 version, and startup programs. It's unreliable for much hardware monitoring other than CPU and RAM usage, GPU it's terribly inconsistent with and you can't really trust it for clocks on anything especially if you manually OC.
@Zando_ I saw this same issue on Reddit and it looks like they are concluding this is the latest NVIDIA graphics driver, 522.25, causing the issue. Additionally it was suggested there to disable Windows Hardware-Accelerated GPU Scheduling on Windows 11. After disabling Hardware-Accelerated GPU Scheduling and rebooting I am able to run all my displays at max refresh rate without seeing the Desktop Windows Manager using all my GPU in Task Manager. End of the day that "fixed it", but I do suspect the Nvidia driver is the real root cause.
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