My server is laggy

[Drocona]

Run it from a different PC, you're not supposed to play and host at the same machine.
Well that's the only other solution I can think of...

oh here's another thing you can try, make a batch file to execute the srcds.exe with all the parameters, now what you have to do is this (example):
start /wait /high F:\SRCDS\srcds.exe -console -game cstrike -tickrate 45 -ip 192.168.0.81 -port 27015 -maxplayers 10 +map de_dust2 +mp_dynamicpricing 0

replace it with your commandline ofcourse