Anyone else getting unplayable siege battles?

[Slaists]

I've noticed that my FPS go to hell when I encounter massed AI flamed javelins in siege battles. Otherwise, things seem fine.

Also, lately I have started to uncheck the affinity for core 0 (do it for the rtw.exe process, after launching the game). This has noticeably improved performance and the game runs much smoother.

Here is a link to an article explaining how to do that: "Change processor affinity"