I thought it might be a particular artifact mod but when I took them all off the issue did not go away. However, after extensive play it seems to only happen when I use Prismatic subclass, possibly in the Nether. Its really all I've tried to do. Other subclasses let me run it for long periods of time. But once I equip prismatic, it doesn't take long to get kicked. Tried pinpointing if its a particular aspect, fragment grenade, etc. But unequipping everything except the abilities still kicked me. So, maybe Prismatic in general is broken? Seems like others are getting kicked from other activities specifically when using Prismatic.