I recently switched servers from Cerberus to Ragnarok to be with my friends, and ever since then i've been unable to play any dungeons. It starts off with me being unable to target party members (they are standing in 1 spot a mile away from the fight, but still doing all the moves), then i get the 5-second freeze/speed-up thing, then i get error 90000. As a healer, this makes it impossible to do anything except sit in town chatting. Even then i get 90000 every so often. I never had this problem on Cerberus so i'm wondering if that has anything to do with it, or it happened to start when i switched

I spoke to my ISP (Plusnet, i'm in UK) and they said it's not their problem as my internet is working perfectly fine on everything but FFXIV. I play on PS3 and i make sure nothing else is using my router when i play, but it isn't helping.