Mod practically becomes unplayable after about 15 hours of gameplay

[YuNoGuy123]

I've noticed that over time the framerate of the mod begins to SHIT itself, turning of 3D health bars was a temporary fix but then the game became a slideshow once i hit about level 50, the game would instantly crash upon attempting to enter a level, I'm now softlocked in the UAC facility indefinately.
Switching to software renderer made the game even MORE unplayable, game crashed when just loading the level.
This happens on any pack of maps that i've tried and any sort of setting does not fix this.