Same issue here. I came here to make a topic on this after getting annoyed with disconnects every 20 minutes. Now I see I'm not alone, this is affecting quite a few people. It's not even lag. The game runs fine, but then all of a sudden, disconnected from server with 90002 error message. I can hardly do dungeon runs anymore because this gets me kicked from parties.

Please fix this issue ASAP, SE. For the record, I'm on DX11 client and Primal data center. Never had this problem before.