"Performing too many actions too fast"

So, I was just kicked from The Phaaryl Megalith and got that message while playing on a PC with a controller. I don't think I was doing anything special, just fighting the bosses that spawn.
Also a little annoying because it closed to portals when I logged back in and rolled back the loot.

same things keep happening to me.
Im using a Lich with contagion/essence drain and dark effigy build, it happens too often :s