@FlorinHiT See my reply to this thread I think I've found the bug is related to DHCP, I got my list back while playing setting the DHCP Server to On, Off and Auto. Every time it was in Off, a reboot...

@Kevin_Z @Carl Guys, I've found the empty client list bug!!!! :D Indeed it always has to do with access point mode or router mode working as access point, because... it happens only when DHCP Server...

@BagiBoom In addition to Kevin's response, you need a very good device with multiple antennas to get the most out of the wireless link. My mobile phone limit is around 120 Mbps, an iPhone XR doesn't...

@brozsa The advertised speed is the "raw" wireless link speed, and that link is shared between client and router. Both devices can't "talk" at the same time because 802.11 is half duplex. The way...

@RaviSodvadiya 2.4GHz has more range than 5GHz because it gets through walls easier. If you have good speed with 2.4GHz don't worry comparing, you do not need 5GHz for 40Mbps.

@gafoyofi What does "can't connect" exactly mean? Do you see it in the list of available networks in your device? What device is it? (maybe it doesn't support 5GHz) Is it an authentication error?...