@MaximilianZakes - Exactly as Fr0Z3n has said, these maps do take quite a bit longer to load ona PC that isn't quite at the top end of things. The ones that valve give for people to look at do not have EVERYTHING included in them, they strip out a lot of stuff that that your average user would have no idea what it would be just to help clean things up. Just give it some time and you will see it shall load It does on my PC fine, but then again, I do have one a little higher up the specs category. Lol
Hardware: i7 920@4GHz, 12GB RAM, GTX580
Hightower(took 6 seconds to load)
ThunderMountain(took 23 seconds to load)
So based on those figures with the hardware I have, comparably, most people would have to wait somewhere between 20-30 seconds for Hightower to load and possibly 60-75 seconds for Thunder Mountain to load
@Duffking - Thank broski, let me know if you find anything useful from it and share it with us, the more knowledge the better.