My computer stopped working a while back so we got a laptop which stopped working a few months after getting it. We got the first computer working again so I don't know if it has anything to do with this issue because this is the first time I played anything other than vanilla minecraft on it (I played Hexxit and Attack of the B Team on the laptop which had its issues, but they seemed to go away after time etc.). The issue is that the movement seems to be too fast. I know that one of the issues with minecraft is that you can't move faster and why would I be complaining about it! Its like the mouse is too sensitive, but I tried adjusting the mouse sensitivity which doesn't help whether if it is lower or higher. I tried playing for a few minutes to get accustom to the controls again as I haven't played minecraft for a few weeks, but that wasn't the issue - it seems to be the game. I tried resetting the pack in the launcher which didn't help at all. The mouse is not acting up outside of minecraft and it is also doing it on Hexxit. If anyone can help I would appreciate it and if this helps at all, the computer was set to factor settings and I have to install some kind of Java for the launcher/game. Usually when I exit the game I get a pop up about platform SE binary something which I tried to look up and wasn't able to find anything that would help.