Recently, after a long break, I went back to TF2 for a little Derusting, only to find that my broken computer couldn't handle it. My lag was crazy and i could only play for a few minutes before i was sick of it. Unfortunately, due to a broken motherboard, my PC can't handle TF2 and i will countinue to remain away from it til i can get a new computer. Best of luck to other players.
Umm did you turn all your settings down to the minimum and even change the rate to 30000 in console? Do you have a laptop? If you do plug it in and set it for performance instead of power saving. Try clearing your ram and close programs. If that dont work get a new gpu. What are your computer specs? ( hmm im gonna start a computer specs thread)