I've been playing Minecraft today and I've had the game freeze on me multiple times. I have no idea what's causing this. Also, I can't seem to load one of my worlds. It either gets stuck at loading or sends me back to the titlescreen. What's going on?
Reinstall minecraft
Make sure that your minecraft is has enough RAM
check for other programs or potential viruses slowing and makig problems worst
if none of these help make sure to post your crash report below!