Castle siege = Crash?

[KevinDaBoss]

I have my battle sizes set to 60, and when I do a castle siege men just keep spawning and spawning until there are 300 Swadians in the castle towers attacking us. When the next round of them come, warband crashes. How can I make it so it KEEPS my battle size?

 

[KevinDaBoss]

Also, how come AFTER I do a battle, I crash? Is it the autosave or something? I couldn't catch the errors, but it said PostFX something something.

 

[King Ragnarok]

i get this, is it a jerky screen a reapating?, if so press ctrl alt delete, then reopen