While I'm not unhappy enough to return my new router, I have a couple of issues with my RT-AX88U.
1 ) It doesn't appear that the firewall works. I get warnings from Norton that one of my PC's is being probed and I block those IP addresses, they still come through the router. Tech Support tells me that everything is working fine but I'm not convinced. I just noticed that a new firmware update came out last week and I'll install that to see if it changes anything. To me if I block an IP address then it should never show up on my PC yet it does.
2 ) Speed on the 2.4 channel seems slow to me. Running SpeedTest typically returns about 100 MBs with a 1 Gb connection. I was getting faster speeds on my 5 year old NetGear router. Not a deal breaker as the connections where I want speed are hard wired, I am disappointed in the speed.
3 ) Connection on the 2.4 channel takes a long time yet the 5 Ghz connection is almost instantaneous. That one doesn't make any sense to me?
I like the management software and that's really nice but for the price I paid for the router, I could have gotten the same performance with a cheaper unit.