mouse movements can be dropped when running compositor-killer

[LunNova]

When running compositor-killer -i 250000 some mouse inputs are dropped, so moving 10cm for example moves only 10 pixels which is far less than the movement when not running compositor-killer. It's fairly inconsistent, and the -i value may need adjusted to replicate this on different hardware.

Tested on commit e74b0df on nouveau with mesa 24