So I use forge to play PvP, and I tried to run forge about two days ago and it doesn't work properly. What happens is the players are glitched an have got their arms waving everywhere. If I try and move forward (pressing 'W' only) I move diagonally left. The movement is distorted for every other key as well. Also, no matter which direction I turn it goes the same way it did before. Also, the screen is glitchy. I tried to attach a video (idk if it worked). If anyone knows what is up or how to fix it I would appreciate the help. Also please don't just say "Don't use ancient versions" because unless there is a mod that makes 1.12 exactly like 1.8 then I'm sticking with 1.8. Like I said I'd appreciate any help you can give.
Bug Report.mp4.wlmp