My first two games tested on Linux were Black Myth Wukong, on which, with the same settings, I drop from 60fps on windows (45 without frame gen) to 25 fps (it’s impossible to enable frame generation on Linux), and Path of Exile 2, on which I was never able to activate HDR.
Plasma 6.4 and 6.5
RTX4070
Proton GE/ProtonCachyos
Gamescope on and off
LG 42C2
HDMI
See you in a year, Linux, for a new attempt.