1.2.1 has issues

[Zeno]

Okay, so I install 1.2.1, and go to play it on LAN to test it out. Its starts running normally, but then it starts going really slow. Not lag, but like computer slow. So then I try it with Steam LAN, and I get the same thing. The previous version didn't do this, and other mods/games are fine. Whats wrong?

[EDIT] Wait, is this only that one new map?

 

[Carnage the 1]

If you mean esf_giant_forst or something, yes it's a map problem, search the forums it has a couple of topics about it. The other maps should run fine.