Enforcing custom frame rates, vsync workaround for multi-monitor setups

dxvkclosed

doitsujin/dxvk#1299 · opened 2019-12-21 by ghost · updated 2019-12-21 · 4 comments · github

?ghost 2019-12-21 github

I have two monitors with two different maximal v refresh rates: 60hz and 144hz. When I play on the 144hz one I only get fps>60 when I disable vsync. Is it possible that X11 itself limits the fps? If so, can we provide custom vsync info for dxvk games? I tried dxgi.syncInterval = 1 but it limited my fps to 60 while dxgi.syncInterval = 144 made my games super-slow.

Mmisyltoad 2019-12-21 github

What are your system specs?

What happens if you disconnect the 60Hz monitor?

What happens if you disable compositing?

?ghost 2019-12-21 github

Rtx 2080, manjaro kde.

Since there's only one 144hz monitor, vsync will enable 144fps if I restart the game.

Which compositor? Desktop compositors don't matter, they don't have any effect on the fps of my games.

Ddoitsujin maintainer 2019-12-21 github

while dxgi.syncInterval = 144 made my games super-slow.

Well yeah, setting the sync interval to 144 means that a game will only present one frame every 144 refresh cycles (so once every 2.4 seconds in your case).

Anyway, it's not DXVK that limits your FPS but something else in the graphics stack. I'm not aware of any workarounds, and it is literally impossible to fix this inside DXVK (like all Vsync-related issues).

?ghost 2019-12-21 github

@doitsujin I only opened this issue because dxgi.syncInterval solved a vsync-related issue for me once(in dark souls 3) and I thought that maybe someone could do some magic because dxvk seems to be pretty powerful but if you say so.

Nothing extracted yet.