We have a very unusual case with one of our Networks when viewing all connected clients. In All mode it shows a list of MAC addresses and not the device names, the Usage counts are all over the place and not reflective of what I'd expect to see.
If I filter the clients by Only Access Point or Only Switch Clients or Only Security Appliance I get correct figures and device names.
I've had a ticket open about this for months and it hasn't been resolved. Keen to see if anyone else is experiencing this too?