As far as I'm aware, you get marginal FPS gains switching kernels. It helps some. It's just a matter of whether the effort is worth it to you. The main change is the scheduler: rather than trying to evenly distribute CPU time to processes, it will prioritize bursty processes.

I've been a fan of Hyprland for gaming so far. Much more configurable for things like VRR/tearing and other precise tweaks via Gamescope than when I was on AwesomeWM with X11. Been especially nice having Lua for configuration, which finally feels very familiar with my AwesomeWM roots.