I have recently booted up Minecraft after 3 years, and I had some problems arise. Like for the first time ever my computer overheated, it has never done this, I don't mean to brag but my computer is fairly recent in its parts and could easily play the newest triple-a title at 75+ frames max settings. But yet Minecraft could barely run at 13. I have now fixed problem but another arose.
  I am now getting random mouse teleportation/acceleration whenever I look around. I could not find a way to fix this if anyone needs I can provide a video. Plz, Help.