I was unable to submit an in-game bug report, so this may be harder to solve. I'm not currently able to replicate the issue and I know this has been a problem for a while. I've noticed that the big holographic map still shows up on the Shadow of Apocrea mission when it shouldn't be any time this bug happens. I've only had this bug happen when playing with a party. The bug occurs most frequently whenever playing on Shadow of Apocrea's Grasping Plateau.
Perhaps old code from the last dungeon map isn't getting cleaned up properly when transitioning to the next floor?
Specs
- 8 GB RAM
- Intel(R) Core(TM) i7-2670QM CPU
- AMD Radeon HD 7470M : 1GB dedicated RAM
- 64-bit Windows 8.1
Issue
Severe fps drops for several seconds forcing the game client to be re-launched / Java process to be killed, to fix the game state. (memory leak?)
I hope this helps to narrow down the cause and that this gets fixed soon!
I'll try to leave an update if I figure out how to replicate it.