2-player game, client and server at localhost

hi, everyone.

I'm writing a 2-players game that should support network mode. I'm now
testing it on 1 PC since I don't have 2. I directly use sockets, and
both client and server do computations, the only data transfered is
user mouse/kbd input.

It works synchronously, but somehow, when I play in client window,
both client and server have 17 fps, while when playing in server
window, server has 44 fps while client has 5, and due to forced
synchronization, they both run very slowly (I wonder how come server
says it has 44fps?).

Does anybody have an idea how can this be? Not that users will test 2
game intances communicating via localhost, but I need to make it work
properly.

-- 
Best Regards,
 Michael Rybak                       mailto:accepted@ukr.net