Maintenance for the week of January 19:
• PC/Mac: No maintenance – January 19
• NA megaservers for patch maintenance – January 21, 4:00AM EST (9:00 UTC) - 10:00AM EST (15:00 UTC)
• EU megaservers for patch maintenance – January 21, 9:00 UTC (4:00AM EST) - 15:00 UTC (10:00AM EST)
The long time that it takes to capture a keep encourages faction stacking and lag
It takes a lot of time to siege a keep and bring the walls/doors down if the number of players sieging that keep is few so people prefer to faction stack in big numbers for capturing a keep and that is often the emperor keeps which causes lag and disconnects. Originally the wall/doors were upgraded so if you take all resources around a keep then it would be easier to siege the keep but that doesn't happen often.