OBS high GPU usage (dwm.exe)

[reen]

Hello,

this isnt the first thread with this issue but no other could help for now.

As soon as I start OBS, with just the standard scene without any source, desktop-window-manager process will eat up lots of GPU resources.

Without preview dwm.exe itself uses ~8% with obs itself using 5% and client server using another 5% of gpu resources.

With preview, client server and obs will remain at 5% but dwm.exe will use up to 30%, which is weird also because there isnt anything to preview at all.

logfile:

https://obsproject.com/logs/OCAakgK0I49MmSRw

In a reddit post there was a solution posted which had no effect for me:

Okay so I finally figured out what the "problem" is;
In NVidia Control Panel one can set a Power management mode. By default the value is normal which causes the GPU's clock speeds to drop by 90% when it is not under load (and thus saving a significant amount of power).
When dragging windows around, it is not a heavy load for the GPU and thus it doesn't increase to a more performant mode. However, when your system is measuring the GPU usage, it does so from this low-power state. The usage will appear as a very high percentage, even though the actual usage is insignificant.
Setting the power management mode to prefer maximum performance will cause the GPU to always run at it's boost speed regardless of the load. This will also show in task manager: the measured usage drops to below 3% on a high refresh rate high resolution monitor.
Another setting that may affect this is in Windows 10's graphics settings. Here you can select individual programs and indicate whether they should use performance or power saving mode.

source: https://www.reddit.com/r/windows/comments/njenpy/desktop_window_manager_extremely_high_gpu_usage/

I hope there is anyone that can help, its causing massive stutters in games.

PC Specs:
Ryzen 3600x
RTX 2080 (OEM Version with Morpheus cooler, so no thermal throttling issue or something)
32GB RAM running at 3200Mhz CL18
OBS is installed onto an Samsung SATA SSD

Windows 10 Pro Version 20H2


Thanks in advance!