Custom Resolution Utility (CRU)

[elexor]

Hi Toasty I have a question about LFC behavior on a gsync-compatible monitor.

I am working on my own diy strobed vrr solution for my VG279QM and the major barrier for single strobed vrr is LFC kicking in and sticking when i don't want it to.

for stable 60fps content LFC will remain off. but other times LFC will kick in and double frame it is very sticky and will not change back to 60hz easily.

I can set my v rate limit to 0 and disable LFC but my monitor will blankout at 24hz
only way I have been able to limit lfc sticking is with custom resolutions with lower refreshrates where LFC can't double frame.

Is LFC behavior controlled by the monitor or nvidia?

do you know of any means to control max LFC range without limiting max refresh? rate ideally i want lfc to only kick in to save the monitor from a blank out so 24hz min V rate double frame to 48hz. turn off as soon as framerate rises above 48fps.

no matter what v-rate max i use it doesn't effect LFC behavior as soon as you have a framerate dip in a loading screen for example double framing, triple framing and quad framing will occur and it is very sticky. often have to reset the resolution to get it to stop.

with LFC completely disabled vrr strobing works well but loading screens and other random things can cause monitor to blank outs.. not ideal.

here's my vrr single strobe in action

I'm willing to do anything to try and quell this lfc behavior im open to any ideas. I'm thinking hardware LFC disabled and software LFC might be the only way.