@rikkipuu Thank you for the educational information.
4. IP Passthrough Stability (If using a second router)
If you have a personal router connected to the BGW320, the Blue 5Gbps port is sometimes cited as less stable than the standard yellow ports for certain hardware.
Since my router has 1Gbps WAN port, it won’t have any benefit connecting it to 5Gbps LAN port. I thought about that though.
5. Wi-Fi Band Steering Conflicts
By default, the BGW320 uses one name for both 2.4GHz and 5GHz bands (Band Steering).
I did ask that question to AT&T technician too. After switching wi-fi over to the new router, I assigned different ssid to each band. Thx for the confirmation.
1. ActiveArmor Security Interference
AT&T’s built-in security suite, ActiveArmor, is known to cause intermittent latency and drops in streaming performance.
Just find out the ActiveArmor is included in my plan but NOT activated, which means it is not the culprit.

