Ne znam. Super je da su oni to sve istestirali i sve, ali evo recimo jednog posta iz te teme na koji se zasad nije obratila prevelika paznja, a koji je po meni ipak mozda i najvazniji. Ja svoja iskutva vucem jos iz COD4 i mjeseci i mjeseci podesavanja, testiranja, varijabli i statijznam cega.
Ovo sto ovaj covjek govori je ono sto ja mislim da je poanta i o cemu tupim vec godinama: fiksni IP, DMZ zona, manualne Net postavke, otvoreni portovi i uPnP. Sve drugo je samo POSLJEDICA toga sto ovi preduvjeti nisu ispunjeni.
A posebno mi je drago da je spomenuo famozni "NAT 2.5", to je jos jedna prica iz doba COD4/MW2 i tzv. Open veze i tupljenja ljudima da to sto im konzola daje Open ne znaci da je doista Open.
Evo, ja se s ovim recimo slazem 100% jer je posve na tragu svega sto ja mislim da je istinski problem - naravno, uz upload:
We had that problem at ICGTC too, it was fixed when everyone put their ps3 to a fixed ip and port forwarded the ports the game manual tells you to open.
It seems you can get NAT2 even if you don't deserve it. It's not NAT3, but still it gives you this loading bar under someone's name in the lobby and guys can't see each other on the track. We call it NAT2,5 
As a example I put my router in DMZ mode for my racing PS3 and it tells me I'm on NAT2. But I have another PS3 in my living room for casual gaming and movie watching. This is on the same router and are because of this blocked. Still it gets NAT2.
Also I disabled UPnP as I couldn't get it to work with those 3 routers I tested, I needed to port forward manually for it to work properly. And after everyone did the same thing the loading bar and people disconnecting seems to have been history.
