I’ve noticed this in quite a few games. It works fine in singleplayer, but in some servers I’ve noticed the following: I play the game normally and get 15 fps, pause it and it whizzes up to 40, unpause it goes back down to 15. I’ve also noticed that the lag also disappears when I equip the camera tool. This is all while other people in the background behind the pause menu overlay are playing.
4gb DDr3 RAM
2.8ghz intel D cpu
9800 GT video card
Any idea what’s causing this? I’ve deleted all of my addons and tried lowering the directx level, all to no avail. Could this be some kind of slowhack? Somehow the camera and pause menu interrupts the script?