I ended up returning it and buying a ac88u. Made the normal tweaks and have had no issues at all with the factory firmware. I really don't care about wifi6 and that was the main selling point of the ax88u.
Having eight lan ports is nice, if you don't have a large secondary switch.
I just purchased a RT-AX88U to replace my RT-AC68U and switched my internet service to Xfinity Gigabit. When I use the either Asus router, my speedtests are very low any pc's that are connected to the lan ports on the router. At the moment, I can't get much more than 500 down. Sometimes it peaks...