I received my BiPac 8900AX-2400 with the 2.52.d12 firmware.
I've noticed that on the lan statistics the bytes for the wl1 interface (which I believe is the 5GHz network) is so high it's almost impossible for it to be accurate.
Seamingly incorrect information is also reported on the bandwidth usage graphs:
I've got my MacBook Pro connected to the 5GHz network and it appears to be functioning fine (gets my full download speeds etc) Does this look like a firmware issue or hardware?