Commands block plugins is broken of Left 4 Dead 2, don't know about other games. I remember seeing on l4dblog a long time ago than developpers updated the game to avoid "malicious" servers blocking ...

This happens on an older HW where is not possible to achieve 100+ FPS and FPS are more dynamic (50-80 for example). The solution I use in TF2, HL2:DM, CSS etc. is "fps_max 60" command. After this ...