FPS ISSUES

Hey guys, every now and again I zoom in or shoot with my weapon in mutliplayer, I get terrible FPS for a few seconds. But I always have 40 - 50+

Any help?

Sniper with scope, and using a quickscope hack, or ?
Sometimes I have good fps but seemed to get the same problem, maybe the host, if it is happening for you only some of the time, if its an all the time thing try updating your graphics card drivers. That helped my issues with that fps issue