I must admit: I dont have watched your reply.
I have two questions:
- You know about the Mongol unique tech in the castle? It increase speed of siege.
- Sometimes the games freeze. When the game unfreeze you will see some fast forward action. On the server the game continues, at the screen it doesnt and needs to catch up. This lag is a known bug: Multiplayer is laggy in current patch
You can see a vid from one of the pros who had this lag too.
Is one of these options an explanation for what you see in game?