Since RT sacrifices throughput for latency you would likely se a drop in FPS, which inturn would also reduce the input processing frequency. sched_ext is much more interesting in that regard as IIRC lavd[1] is for example designed to (ab)use the frequent repetitive access/processing patterns of game engines

[1]: https://github.com/sched-ext/scx/tree/main/scheds/rust/scx_l...