VRR does not match the FPS in wine

[v44r]

In hyprland (current git) I cannot make VRR work with wine. I have cursor:no_break_fs_vrr = true and misc:vrr = 2 and vrrtest works fine:

hyprland-vrrtest.mp4

However, in a wine game (DISPLAY= MANGOHUD=1 DXVK_HDR=1 wine D2R.exe) the refresh rate simply goes to max constantly, causing VRR flicker:

hyprland-wine.mp4

I tried disabling HDR; the result is more or less the same (maybe a bit better, at least now I see the refresh rate matching the FPS sometimes):

hyprland-wine-nohdr.mp4

In sway-git, for example, the same wine command (this is with HDR enabled) works great:

sway-wine.mp4

I don't think I'm missing anything in the config, since vrrtest works great...

[vaxerski]

@UjinT34 you worked on vrr a bit, any ideas? I don't use vrr.

[UjinT34]

cursor:no_break_fs_vrr = true sometimes doesn't work with hw cursors due to videodriver issues, cursor:no_hardware_cursors = 1 should fix it. Nothing else can be done from HLs side about it.
If this is caused by something else then it's probably some general issue with scheduling which causes frametime jitter. Proper fifo should solve it.

[v44r]

I had already tried with with cursor:no_hardware_cursors = 1; no change.

I assume if the problem was the cursor the monitor Hz would jump to max with mouse movement and match the FPS with the mouse stationary, right? That's for example what I see when I run D2R inside gamescope standalone (in a VT, NOT in Hyperland):

gamescope-wine.mp4

What I see in Hyprland is different, the FPS jump constantly to max even when I don't touch the mouse.

BTW, another thing: when I run vrrtest.exe (i.e., windows version) under wine, it works fine. The FPS match the Hz perfectly. I only see the problem with Diablo 2 Resurrected. So it's not a plain wine problem; maybe it's caused by DXVK or other component. I'll try to find other games where I see the same behaviour of bad VRR in Hyprland and perfect VRR in Sway.

[v44r]

Tried with Doom Eternal (Proton Experimental), and it works much better than plain D2R (wine + VKD3D) above, but still more jittery than Sway:

Hyprland:

hyprland-doom.mp4

Many excursions over 100Hz when the minimum frame time reported by mangohud is always >10ms (I never get close to 100 fps)... on the other hand, Sway is perfect (Hz is always between the min and max frametimes):

sway-doom.mp4

So yeah, probably scheduling issue?