Hello, I've run into a weird issue when trying to play some Warframe.

When running the game all of the performance stats seems to be reporting a solid 200+ FPS but the framerate feels choppy as if I were playing on 60 FPS. I'm playing on a 240hz monitor and I notice the framerate is not at all close to 100 even though both the game and mangohud is reporting 200+ FPS.

I've tried running GEProton 9.6, GEProton 9.7 and Proton Experimental through Steam but nothing seems to solve the issue. I'm also using VKD3D_FEATURE_LEVEL=12_0 to enable DX12 (DX11 has the same issue) aswell as gamemoderun for any possible improvements. Note that this all persists even without any flags. I have also tried disabling the Steam In-game Overlay but that didn't help either.

Does anyone have any information on what could possibly be going on here or anything that could help? I will post my specs below.

OS: Nobara Linux 40 DE: KDE PLasma 6.0.5 CPU: AMD Ryzen 5 5600X RAM: 32GB (2x16) DDR4 3200Mhz GPU: AMD RX 6800 XT

Update: I found out that the issue seems to be related to KDE, when running in GNOME (Wayland) the displayed framerate matches what is reported via game and MangoHud.