I am kind of relieved to see this isn't an isolated incident. PS4 player here, and I've been encountering these issues too- though my connection is stable. Tried to run a couple of DF instances and it was very hard to even clear let alone complete due to the lag spikes causing spells/skills to not register, or error 9000. Quite frustrating, sometimes causing me to be booted out of the dungeon due to a followup error 2002. Hopefully they will address these issues in the next maintenance.