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PresentMon DWM low fps while idling
Posted: 09 Apr 2025, 19:09
by crack
Is there any way to stop DWM from throttling frame rate on the desktop? PresentMon shows me that the moment I oscillate or spin a window DWM fps ramps up relatively close towards my monitor's max refresh rate (173-229 fps avg when spinning, am using a 240Hz HDMI 2.0 cable) in games DWM doesn't throttle, the moment I alt tab it does. Is there an obscure regedit tweak to toggle this?
Re: PresentMon DWM low fps while idling
Posted: 10 Apr 2025, 00:23
by RealNC
crack wrote: ↑09 Apr 2025, 19:09
Is there any way to stop DWM from throttling frame rate on the desktop? PresentMon shows me that the moment I oscillate or spin a window DWM fps ramps up relatively close towards my monitor's max refresh rate (173-229 fps avg when spinning, am using a 240Hz HDMI 2.0 cable) in games DWM doesn't throttle, the moment I alt tab it does. Is there an obscure regedit tweak to toggle this?
Maybe it's due to vsync control?
https://learn.microsoft.com/en-us/windo ... nc-control
It's always enabled by default. SpecialK always disables it when you inject it into games. Obviously not recommended for online games that use an anti-cheat system. It can also be globally disabled in the registry.
Re: PresentMon DWM low fps while idling
Posted: 31 May 2025, 04:24
by olui
RealNC wrote: ↑10 Apr 2025, 00:23
It can also be globally disabled in the registry.
I don't know if that DWORD is deprecated, but I tried here, and it didn't work. PresentMon is still showing lower fps on idle, just like op.
Any other clues?