I can say about CS, I can run on average 150hz in low setting and FSR on performance, the game seems like shit, but you can. On medium, I can run around 120, and I feel that some maps are heavier.
Do you are playing on Xorg? Usually wayland can have some impact on your game.
Are you experiencing too much stuttering in all games? Recently I discovered my MOBO was trolling and I had to disable some energy related features.
Are you running your game with gamemode? It can make a great difference.
You can also try different kernels youtu.be/qNzd57b0h08
Operating System: EndeavourOS KDE Plasma Version: 5.27.8 Graphics Platform: Wayland Processors: 12 × AMD Ryzen 5 3600 6-Core Processor Memory: 31,3 GiB of RAM iirc it is 3200 Mhz but it should not have a so big impact Graphics Processor: AMD Radeon RX 6700 XT