@Sunshine Thanks for getting back to me Sunshine wrote @ec5780 Hi, the Wi-Fi dropping issue not happens on all the wireless devices at the same time? Sometimes, device 1, 2 have the issue and other...

@Sunshine Thanks very much for following up. 1. Yes the issue happens only on WiFi. I have temporarily plugged in a different router to the ethernet port on the TD-W9970 to use as an access point...

I have exactly the same problem. In case it's relevant, I did enable Bandwidth Control to get around the 'bufferbloat' problem but I didn't expect this to prevent devices from connecting to the WiFi....