Maintenance for the week of May 25:
• PC/Mac: No maintenance – May 25
• ESO Store and Account System for maintenance – May 27, 6:00AM EDT (10:00 UTC) - 4:00PM EDT (20:00 UTC)
Might be happening because after they connect you don't have the bandwidth to stay connected.
Though you'd have to have a pretty bad connection, ESO doesn't need a whole lot. o.o