Game lagging when running more than one client

I recently bought a new computer, and since getting it and starting using it, Salem has begun lagging when running multiple clients at once. Only when the game has to load several buildings/items at once tho' (read: primarily when in my base/providence).
Needless to say the new computer is more powerful than the old one - by quite a margin in fact. Never experienced any problems before.
Any ideas as to why this could be happening? Tried messing a bit the video options, and so far no luck.
Anything i can try out is welcome
.
Needless to say the new computer is more powerful than the old one - by quite a margin in fact. Never experienced any problems before.
Any ideas as to why this could be happening? Tried messing a bit the video options, and so far no luck.
Anything i can try out is welcome
