10-20-2022 02:39 PM
10-20-2022 08:32 PM
10-21-2022 06:14 AM
Go to Graphics settings, find "Hardware Accelerated GPU Scheduling" feature, and disable it. Reboot will be required. See if that eliminates the DWM 100% usage.
10-21-2022 09:31 AM
10-21-2022 03:09 PM
Sorry that didn't resolve it. I recently ran into high DWM usage (though not with any discernable performance impacts) when I loaded the nvidia 522.25 driver, and turning off the Hardware Accelerated GPU Scheduling (HAGS) resolved it -- so hoped it would help you.
Has this problem always existed since your machine was new? I've seen a lot of people say it happened after certain Windows updates, so if it started recently you might look at your update history and see if anything coincides.
I assume you've already updated the video drivers to latest (both iGPU and dGPU). Though sometimes that backfires -- I never had the issue until I updated to the latest nvidia driver (522.25) . Many people have reported it with 522.25 -- some with performance impacts, others with high usage% in task manager but no performance problem.
Some users reported resolving it by turning HAGS off (as I did), others were able to resolve it with DDU and a rollback to earlier Nvidia driver.
Good luck -- it sucks to build a nice machine and then have recalcitrant issues like this.