

when motion blur is disabled the game forces a 30fps lock regardless of vsync or fps cap settings, leave enabled

RADV_DEBUG="nodcc,nodisplaydcc" %command% +com_skipBootSequence 1 -nativevulkanloader
Water not rendering
Water will not render until using the command listed for 'Launch Options'. Forces Vulkan on Steam Deck and makes it perfectly visible. Proton Experimental causes massive graphical issues with this command, use default Proton 9.0-2 and it works and looks perfect.

Games Motion Blur setting is tied to FPS
Running the native SD resolution of 1280x800 and then turning Motion Blur OFF causes locked 30FPS no matter what other settings. Leave Motion Blur ON, turn down to LOW in 'Advanced Settings' to minimize the effect and get a solid 60FPS on HIGH or above.

Played through the whole game on SD, worked great, avoid dynamic resolution IMHO - doesn't work well in this title.
Lowered ingame resolution with FSR upscaling - less blury & better FPS.
Works great, try 1152x720 borderless with FSR upscaling for a cleaner image as the games TAA is clean but blury. Avoid the highest settings on SD, diminshing returns.
50 hz/50 fps for 2,5 hours, around 2 hours on default 60 hz/fps, turned off motion blur, every graphical setting on high, filters on anisotropic 4x, anti aliasing on TSSAA 8TX, stable fps with minimal drops in bigger fights
Tried the black screen flickering fix posted here but it didn't work for me, it's possible that i set the launch options incorrectly, others are welcome to try and post their experience
If you are having issues with black screen flickering when looking around, use the launch options apphended
RADV_DEBUG="nodcc,nodisplaydcc" %command%
Very minor technical issues, changing from fullscreen to windowed fixed them.