Waiting too long at login screen

Hey everyone,
my problem is, i want to log on on another computer of mine. This computer is old and when i start Crossfire, it takes a lotta time, until im able to log in. I already recognized on my good computer, that i cant log in, when im waiting too long at the login screen. But this computer takes too long and so im not able to log in. Can i do something about it? I really wanna log in with 2 accounts.

Cheers.