Minecraft Freezes My Computer

Legacy versions of minecraft that are available in the minecraft launcher that I play because my computer is a potato have begun to start freezing my computer mid game. I hear that I am not the only one with this problem. Please review this issue to protect such an Important part of Minecraft history and my wallet from having to buy a new PC. (I play Infdev versions by the way.)
Edit:
Heres a Yt video about the issue: https://www.youtube.com/watch?v=BIMeAznqOjQ