I assume the issue is with QoS.
I picked up the XR500 to replace my R8000P (due to DumaOS) yesterday. It is definitely up and running, but now that I have all of my 15+ devices connected, I'm noticing a big drop in performance on my mobile device (Galaxy Note 8) in simply accessing websites.
If I disable QoS completely, seems to work fine. I obviously do not want QoS or Anti-Blufferboat disabled -- how can I make sure I'm getting full performance to my devices?
I have that "excess" button checked, but it doesn't seem to be working..