Grabbed one on sale from amazon. Set it up today and everything is working really well! So easy to install OpenWrt from the OEM interface!
Client: iphone 13 pro max (2x2) on an 80mHz wide channel. Pretty basic settings.
MT6000: have it set as an access point (no routing), plugged in to the LAN 2.5g port to the rest of the network
R7800 23.05 with NSS “baseline” (it has worked well for a total of 5 years, time to finally upgrade to wifi 6)
MT6000 OEM firmware (wifi 6 > wifi 5):
MT6000 with a master build I made today (no offloading, no bridger, nothing fancy. little better latency and a smidge more speed than OEM):