What Country/State/Province do you live in? San Antonio, TX
Modem brand & model number: Ubee U10C019/UC10C020 (replaced our old Netgear router 2 weeks from post)
Router brand & model number: Same (router/modem)
Network Connection Type: Wireless
If Wireless, what type of encryption are you using? WPA2
If Wireless, are you using a white or black external adapter, or an internal (Xbox 360S) adapter? White (black is on order)
Things you have tried: Changing wireless channels (started at 11 and an currently on 3); connecting the 360 with an ethernet cable; calling Time Warner to validate no issues are present with router.
Is UPnP Enabled? No
Is NAT Type Open? Yes
Any Error Codes you encounter: See Test Xbox Live Connection below
What type of internet do you have? Cable
Who is your ISP(Internet Service Provider)? Time Warner
After you run "Test Xbox LIVE connection" and click on "More info", what is the exact message shown on screen?
W: 0000 - 0021
X: 0000 - F001
Y: 20A8 - 48E0
Z: 0000 - 0000
ID: FFFF - FFFF
Basically, I connect to XBL with no issues, but the second I attempt to play any multiplayer game online (COD: BO, Crysis 2, and Battlefield 2 were my sample games), my internet seems to crawl it's way through the traffic before disconnecting me from XBL altogether. What's weird to me, however, is that Netflix plays with little to no issues (unless that isn't weird to the rest of you more technically savvy network folks).
What other things can I check and/or what things am I missing to solve this issue? Any help is greatly appreciated! Thank you all very much.