vbulletin is slow at peak time. how to optimize it?

[surfmanjoe]

my board is pretty much slow at peak time (usually at evening to night). online members are more than 500, however, my server load is above 1 less than 2, most time is around 1.3-1.4, is that normal? any suggestion? THanks.

[Jake Bunce]

If you post a new thread in the Server Configuration forum, then some one can help you with this. Be sure to include the information requested in this thread.