It's back again. I've had this problem before, and It swapped when I went onto a different account. But It's back again and really annoying.

When I zoom in with either the scout or the AWP I lagg and have to switch my weapon and go into the esc menu to wait for it to catch up. I can zoom in for a second, then I have to switch weapon so I don't start lagging. I've set 70fps as my max because some one ingame thought it might help, it didn't. I keep constant fps when I zoom, but for some reason it gives me a lot of lag.

I need some help :C.