Recently I've been using linux 1.001 to run Genocide and Neutral glitchless, but every time I battle Undyne the game drops the FPS to about 20. This only happens when OBS is open and if I use linux 1.001 version. Sometimes even the menu is at low FPS. Can anybody help me?

For me It lags in some places when I use linux version so I use PC sadly Maybe You can reduce lag if you not use linux, but I can't sure if this work in undyne