It actually depends upon the band and customer connectivity. For 2.4Ghz the Wi-Fi 6/6E series is mostly all 2x2 and only supports MU-MIMO in a single route (send out only). Ubiquiti endorses using the AP in a location https://marleyfhfx921963.pointblog.net/a-simple-key-for-best-wifi-7-access-point-unveiled-71238186