FFXIV ARR pushes the PS3 hard, i haven't had any problems with it crashing or resetting though. I do however make sure that it is raised off the surface using drink bottle tops to let more air circulate. I also make sure it has lots of room around it for the same reason. If you don't do those things, it could be something for you to try. As overheating is one of the main causes of consoles crashing. freezing or resetting.