Internet conenction crashes when I start BF2/PR

[Viper[ESF]]

Hey folks,

As soon as I start PR or BF2 my Internet connection is getting fucked. All other Games worked fine. I already tried reinstalling.

OK now more details:

I know that connection fucks up because Teamspeak and Vent are disconnecting and I can hear that. In addition the screen is completly black for 45sec after I click the shortcut.
Then the Intro starts and the Internet connection turns back online. If I terminate the bf2.exe while that blackscreen via Taskmanager Internet turns back on instantly.

When I overcome the first burden (blackscreen) the Login process takes 1minute or even more and crashes the Internet connection again. After I loged in, the PR Backgrounds stays black for about 2 minutes and then Game is fully operational.


PS: I have Windows7. I tried using compability mode for XP and Vista, it had no effect. I hope someone can help me...


edit: Its clean OS Install, Windows Firewall and Defender turned off. AntiVir etc all turned off and/or deinstalled. My router has a DMZ, so all Ports are opened. So it shouldnt be a network problem....

[Viper[ESF]]

it seems to affect all Gamepy Games now... I rechecked my router settings and everything should be fine... I still got DMZ and manually opened all Ports needed... ffs this is driving me crazy -.-