[Wine] Wine and Multicore Processors

[thom_raindog]

Trying to solve the problem of choppiness and stuttering on LotrO I wonder:

Someone mentioned turning off multiprocessor usage for LotrO as a solution. I use an AMD64 on gentoo 64 bit. What would I need to do to make wine run LotrO on just one core, or, does it do that by default anyway, in which case: How do I set it to use both to test if that helps?

Can anyone chip in there?