I can finally fight pyros without losing 70% of my FPS and when a medic stands on top of me his beam doesnt freeze my screen so I'd say pretty good update!
I rate 11/10.
edit: for those having issues with hammer not knowing where tf2 is the .exe was updated and you have to find the new one by going into the hammer settings/options then change the hl2.exe for the new executable, its in the same place as the old one.