Maintenance for the week of August 3:
• PC/Mac: No maintenance – August 3
• ESO Store and Account System for maintenance – August 4, 5:00AM EDT (9:00 UTC) - 4:00PM EDT (20:00 UTC)
That happens all the time. Usually if there are too many players in the zone you're trying to get to, or if your system is having trouble loading the texture assets. Loading screens are always longer right after a patch as well.