Is there a "good" maximum number of forums for a site?

[محروم.كوم]

Hello,

I have been using vbulletin on some small sites, but am now working into some larger forums.
Is there a general cap you would set on the number of forums for optimal performance?

Like, "For best results, you don't want to have more than #### forums on your site."


I am currently working on a site that has 11,000 forums.
Has anyone else worked with a board this big and care to share any tips?

Thanks.
Any info is greatly appreciated. __DEFINE_LIKE_SHARE__