Hmmm I dont know. As i only switched on Auto today and also the DFS today and it hasnt dropped since. Before that it would drop to 2.4ghz after 5-10 minutes
So I am having issues also i was on channel 124. I have enable auto?? and also I have an option to select DFS channels will see how this goes. If it does not go well I will disable DFS and see was that my issue.
Yeah that didnt work for me strangely. Also not sure why that would only effect 2.4ghz. I also plugged in just a USB and did the same. For me 2,4 is more important so i just leave the USB free :)