Ive been playing on minecraft forge 43.1.43 with my boyfriend the past few weeks and out of absolutely nowhere my games just started to absolutely chug. we have like 90~ mods but none of them have caused any issues whatsoever up recently, i was in the middle of a fight with the twilight forest naga and my frames became abysmal and even just looking around was impossible. I have removed a few mods and nothing has changed, I have played singleplayer and still the exact same thing. My boyfriend believes this to be a memory leak issue and I dont have quite the experience to really have any reason to deny such. How could I fix this?