So i recently tested immortals of aveum demo with FSR3 FG on both windows and linux, as it stands right now, FSR3 FG needs vsycing to properly present the generated frames so you can get a smoother experience.
the issue is, not only we are at the mercy of game engine implementation of vsync, or worse at the mercy of adrenalin vsync.
On linux however, thanks for everything being run in vulkan, we can have a "mailbox" presentation, so we can get rid of screen tearing + having FSR3 generating frames properly + good input lag...
My experience on linux with MESA_VK_WSI_PRESENT_MODE=mailbox was not only smoother as it didn't tear but also better input lag, so much so that going from 30fps>60fps FG vs native 60FPS felt almost identical.
is possible to have this same vsyncing behavior on windows? or perhaps having that available for devs on the fidelityfx SDK?