Game lags like hell after map loadup

[mitterdoo]

I'm trying to host a server, but for some reason, the FPS drops a whole lot, making building difficult. I exited the server out, and the FPS remained low until I closed it out. In the console it got stuck in the IP and port thing for about 15 seconds, and went right along. It isn't this, because when I tried starting a singleplayer map, the FPS still went down. Any fix please?

[Ad Bot]

[comr4de]

Uh, It's one of your serverside addons. Start up with default addons, and then restart with the addons you want, one section at a time. When you find the mod that causes the lag, delete it.