I had a similar issue with slow speeds. I called support, they set 5g to Auto. Didn’t get 5gz at all. This week, using the netgear app, I just took a SWAG at channel 44. Worked great now get 180+ gbs at 5g channel on Xfinity. Same speed in used to get on the xfinity modem that I rented. Also, router gets Very Hot! Raised the back up on a 1 inch box and now it is a lot cooler so airflow on this router is extremely important.
