n00b question - FPS?

[tempest]

I run a small 10-slot match server for my clan from the same monitor which I use to play AC. Would that affect my fps?

Generally not. But it's not a dumb question - while AC's servers are very light on resources, some other games require one beefy dedicated server per game server.
However, be aware that the server uses considerable bandwidth when it's full, so you might experience (network) lag.