I tried what you said and it's working much better, I can actually run three clients again with no lag, some strange flickering in things ig but definately playable compared to what I had before.

Thank you so much Carnage and everyone else who gave advice/help, my warlocks thank you all too, we can finally begin leveling again.

P.S. for anyone else who has a problem like this it seemed to be the "change SET processAffinityMask to 15 in the config.wtf file" part that fixed it the most