Subnautica 2: How to Uncap FPS and HDR

Go to your Local game save folder
on windows it should be in %appdata%/Local/Subnautica2/Saved/Config/Windows

open “GameUserSettings.ini”

Edit these options to your preferred frame rate
FrameRateLimit_OnBattery=60.000000
FrameRateLimit_InMenu=60.000000

i set them to:
FrameRateLimit_OnBattery=144.000000
FrameRateLimit_InMenu=144.000000

Optionally you can manually change other settings including HDR
although i havent tested if manually setting the HDR works
but it should be this one:
bUseHDRDisplayOutput=False