-Party members Teleporting
-Skill Lag ( Caster Skills get interrupted, Tank combos don't appear, Bard songs don't appear and more )
-Heals and Buffs don't land on their target Ally
-Damage doesn't land on Enemies
-Interactions taking 5 to 15 seconds to start ( grabbing keys, opening doors, shortcuts, etc )

Yepp I stopped doing Dungeons. Too much lag.