Nighthawk CAX80 WiFi Cuts In-and-Out Constantly

I bought my CAX80 as recommended by Xfinity for the upgraded internet service I purchased. This replaced my C7000v2 which has worked well for years. I’ve had Xfinity out to my house and they found no issue on their end. When I plug in my computer into the gateway I don’t have any issues. But over WiFi, regardless of whether or not I enable 802.11ax or the Smartconnect, my signal continuously cuts in and out. After many phone calls checking my firmware and channels and many many factory resets I’m getting a replacement. Hopefully my new one will work but I have a sinking feeling it won’t. Has anyone had this issue and if so what was the fix?