@Alex_UTS 

I tested it out. Every time you click the "Client" it will refresh the page and will not table with the IP. If you click "Client" every single time, it will reset to the default view of the table.

If this is it, this is normal. Unless you click the refresh button on the top right area. It'll not reset to the default view. And, table with the IP still applies to this "Client" list. 

@Alex_UTS 

Sorry that I have to zoom in on my browser to view the pics. 

I reviewed the pics of the switch you mentioned. It fluctuates AAAA lot! 

The EAP235, is that EAP235-Wall? Do you have devices connected to the ETH ports? I remember the ports on the EAP will pass the Clients to the switch. The PC, for example, connects to the ETH port on EAP235-Wall, the map will show this device connects to the Switch instead. I heard people saying the chipset of EAP will not process the ETH ports. It's like a dummy switch. 

Edited: About the cameras connected to this switch, do they have external power or use PoE from the switch? 

Edited: I am confused too. Is that possible that your devices sleep and wake up by the network requests? So, you have such fluctuation?? Weird