Mouse input breaks at high framerates when built with SDL2

[RevengeRip]

Summary

When built with SDL2 mouse input lags at high framerates and causes keyboard input to lag as well. It looks like mouse causes a lot of input events that are slowly processed. Here's the video. Can be worked around by enabling frame limiter.

Replay_2026-07-23_19-08-52.mp4

Build options

CC=clang CXX=clang++ cmake .. -DLIBRW_PLATFORM=GL3 -DLIBRW_GL3_GFXLIB=SDL2