Ok, thanks. I'll try out his maxfps config to see if that helps it. The new gpu works great for crysis (60fps 90% of the time) and other games, but I guess tf2 just isnt optimized well enough.
I'll try OCing it to see if that helps it.

Also, when I'm on a map like koth_arctic (causes a ton of lag problems with people I've heard) at the middle, my fps tends to drop below 60 and go up and down, but then when I'm at the spawn or in the tunnels it goes up super high to like 300. The gpu usage is at like 30% so I guess the cpu is bottlenecking. But thanks :)

What settings/configs do you guys use?

My system specs are as follows
Amd phenom ii 830 2.8ghz
Nvidia gtx660 ti
12gb 1600mhz ram

I get great preformance out of other games but tf2 is a bitch and fps goes everywhere. I've tried chris's fps config (as well as the tf2mate one) and it helped with my old gpu, but now during gameplay its at only 30% so I don't feel I need it anymore. I'm sure there are some console commands or conpetitive cfgs that I don't know about that will make it better. Of course the cpu will bottleneck in more demanding games like crysis but it should be ok with tf2 right?

I've been watching peoples streams on twitch (eg http://www.twitch.tv/mangachu_/c/1967612) and they are incredibly smooth and good looking.

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Actually while I'm on the topic, I need some help with scripts as well. I installed a medic autoheal script but it forces me to take the beam off and stop healing before I switch targets which is absolutely stupid when I could just do that without the script. Could anyone link me to a good medic script for that? I'd really appreciate it.