Valencia siege is basically dead because of the lag and disconnect.
I agree that the mass amount of players participating in siege could be called the reason for the insane amount of lag/disconnects. That being said, PA made siege available to everyone who owns a node and raised the rewards for attending without planning for the changes on thier end. Of course everyone wanted to play and sadly most of us are very dissapointed with how it turned out.
Desync needs to be fixed period. Lots of people claim it as why they are leaving. It's not too apparent but it builds up over time :/ Or just an acknowledgement that desync occurs and can't be fixed, I would like to see transparency.