Asus: problems with connection XBOX 360 E to Microsoft Live services

Asus (Modems/Gateways): problems with connection XBOX 360 E to Microsoft Live services

Hello again. I had tryed all steps, including port forwarding, DMZ, UpNp and others, but I dont resolve this problem =(

I think it should be said that in fact, LIVE is working, but sooooo slow. Games and updates are loading, but it takes a very very long time. Network diagnostics (from the Xbox) shows a download speed of 36 Mbps, and a upload speed of 4 Mbps. In fact, the
Internet channel is 100 Mbps (speedtest confirms this). But at the same time, downloading a game of 300 MB takes at least 1 hour.

In addition, when checking the connection with LIVE, the console writes that there is a connection, but on the right, under the checks, the words "service - and a big yellow exclamation mark" are written. If I had press Y on the joystick, then the error
message that I showed earlier is displayed.

In my home network there is only 1 Xbox. Xbox version Xbox 360 E. Router Asus RT-N66U. My Location: Russia, Primorsky Krai.

Please tell me how to solve this problem.

:)