I have FW 1.34 A2
[BUG1]Leave everything automatic,the priority of XBOX is 128!
Apparently him StreamEngine is unable to recognize the traffic generated by the XBOX.
If I want to get the results I have manually set the priorities.
[BUG2] in http://router/Advanced/Gaming.shtml select in "Application Name" > "Xbox Live" are selected only 2 ports, this is no longer accurate.
Is correct:
53,80,3074 TCP
53,88,3074 UDP
D-Link,please,fix all

Thanks.