Down Connection and lag Spike

I apologize for my bad english, i'm trying to express myself better as i can.

My problem is the following:

I'm a PS3 user and i was playing this game fine 'till a couple of week ago. Maybe something more, let's say 'till first of january.
Every evening and during the week-end when the server are full i have bad lag issues with a sort of D/C. I see evrything is going to happen around my character but other player see me stopped in a point with d/c symbol on head, and every action i perform will be ignored by the game. I can move and use skill but they don't have any effect. Somestimes this lag spikes took a couple a minutes, sometimes they go on for a while and in the end i got error 9K o i have to exit and relog to saty connected for some minutes before that repeat.
During the afternoon and in the morning i don't have any problem. I can play Titan extreme without eat anything, but in the moment the server going to be full for Coil reset or Raid hours i have this bad issues.
Also a friend of mine has encountered the same error, whit the same dynamics.
This make impossible to me play Coil with my static :/

Thank you all, and sorry again for my English.