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jjjjjj
72 discussion posts
When I play a game that usually works with VRR, VRR gets disabled (I'm locked to max refresh rate) if I have a mirror window pinned on top. Just being open doesn't cause it. Only if it's pinned on top. What causes it? Can this be fixed at all?

I didn't notice until now becuase I only used VRR in extended mode as I have Adaptive Sync displays with an Nvidia GPU, and up until recently, surround was not supported with Adaptive Sync. This changed recently, and I confirmed VRR works in Surround now. The thing is, when I played in Surround, I also used AHK and DisplayFusion to remap HUD elements in certain games to the center screen.

EDIT: Did some extra testing. This only happens if using pinned mirror windows on top of a FULL SCREEN game. If the game is running borderless, it does not happen. I guess this is an acceptable workaround for now, but it'd be so much better if I worked in full screen as well.
Apr 12, 2019 (modified Apr 12, 2019)  • #1
Keith Lammers (BFS)'s profile on WallpaperFusion.com
I believe this is related to how DWM works in Windows. If a visible window is using DWM (as the mirriong window will), DWM somehow limits refresh rates to that of the primary monitor.
Apr 12, 2019  • #2
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jjjjjj
72 discussion posts
Just added a note about how it doesn't happen in borderless, even with the mirror windows pinned on top, in case you didn't see.
Apr 12, 2019  • #3
Keith Lammers (BFS)'s profile on WallpaperFusion.com
I didn't see that, sorry! I'm not sure why windowed/full screen would make a difference, but unfortunately there isn't anything we can do from our end to change this behaviour. We're not doing anything special with the mirroring window, so the only thing you can really do is use one of the workarounds that you've already found.

Sorry!
Apr 12, 2019  • #4
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