Poor performance on my pc

[placid finch]

install the Resources flatpak app, and watch it periodically as you play the game.

see what gpu is being put under stress

also check inxi -Gxxx in terminal. watch the info well to see which ports are active, which monitor(s) etc

[flat lake]

Is there a code to install it

Everything is good
Right ?

[placid finch]

you only have one video card in this case, with jack DVI-1 used for monitor, as shown. so naturally it's being used. AMD gpu drivers are already fully included from within linux kernel as shown