I have this same problem..I gave up doing fates once I got to dragonhead. Idont know if this is just a big issue for PS3 users or not but it's horrible. The fate monsters only load for me if I'm standing right on top of where they spawn most of the time. A fate like Svara or Behemoth? Forget about it. The bosses never load for me nor do other PC's, this includes party members and as a healer this creates huge issues. When there's 50+ people doing a fate it's impossible. I wonder if maybe SE can add an addition option to maybe hide/show other PC's, if that would help the load times. As it is now is unacceptable and unenjoyable.