Ok, I'm tired of temporary fixes. My sister plays MC on my PC but every now and then it would just suddenly start running at 1fps. My PC isnt overheating or throttling and I know that for sure. The only fix Ive found for this problem is to completely delete MC folder in appdata and then reinstall it. I dont like this soloution because I have to reapply all of the settings everytime and add servers aswell. Theres no high use of CPU,memory or GPU which is kind of weird. Im using win 10 and Ive got no ideas. Anyone can help with this crap?