I had that before, there is a couple of things you can do, remove all the files and let steam download them again cause its usually caused by corrupted files even if you have them or not, hence the game feels like they have to validate everytime, I reinstalled steam completely but that isn't needed I think, reinstalling TF completely is probably and maybe a validate/defrag of the files before you start it up.
I put this in the finding friends thread, however I would like to throw it here as well.
I am looking for some chill folks to hang with and play TF2.
I haven't played much, and am generally bad at it right now. Hit me up on steam at pepsi62 or just hit me up via PM here.
OR if you still aren’t satisfied, you can set your anti-aliasing and filtering settings as recommended or below.
This has worked for many and if you are lucky, will work for you.
It depends on how many threads your machine can handle.
oneoneone Edit: If you're fighting the new boss, GO SNIPER / HUNTSMAN. In comparison, Heavies bullets do 4 damage per bullet. Just keeps searching, and I don't really have the patience to let it go on for a great length of time. The guys in there said they were in queue for upwards of an hour.
I enjoy the MVM way more than I enjoy the deathmatch crap.
Or try to run the game windowed.22# n Vidia TF2 Driver Crash Team Fortress 2 Hangs and after that, you see corrupted graphics.
There is no fix for this yet.23# Team Fortress 2 Crashes – 25# Custom Sound Crashes The Server ?
In order to download the map, you will need to connect to a server with that map playing, it will automatically download that map.5# Server Browser Can’t See Any TF2 Servers Team Fortress 2 servers are currently listed under Team Fortress so when you filter to see Team Fortress 2 servers only, you will get nothing.6# How to Startup Team Fortress 2 with Launch Options7# HL2Crashes Refer to #9 and you will find several workarounds to fix this issue.