DXVK has no control over Gsync. No idea why it wouldn't work, but this sounds like a setup issue elsewhere on your system or a driver bug.
Thanks for the reply @doitsujin. Does DXVK use a special fullscreen mode compared to dx11?
I have reproduced this on 2 systems, Windows v1903 and v2004. Fullscreen in dx9 to 12 does work with Gsync.
Nothing extracted yet.
When playing any game in fullscreen mode using DXVK, the monitor refresh rate is static and Gsync doesn't work. Borderless/windowed mode makes Gsync work as usual.
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