First of all there are quite a few back-end clients, taking full account of the gateway's ability to carry the volume of machines.

Could you please elaborate on backend clients and if this is something detrimental to the system performance how do i fix it.

Also the 2.4G band is very crowded and it is not a wise decision to put all the clients on 2.4G, 5G is a better choice.

I have already changed and opened the 5G radio channels , thank you for this recommendation.

In addition, 500M is not a very high bandwidth, and all things considered, it is normal for clients on such a large network to have problems with network instability.

I have a second WAN2 Line shooting 200Mbps and i did use this to support my system but i am not well versed as to the configurations of this, in the load balance Boxes i had input 3:1  or 500 : 200 but i was still facing this issue of constant complains of no internet connection while clients are connected to WiFi. So total Network speed combined is 700M

It is advisable to consider the problem in terms of upgrading the network and improving the network environment.

What would be the recommended Net Speed to serve 180 Clients rate limited to 2.3Mbps download and 650Kbps uploads.

Also could you please recommend upload speed for Nominal Video calling Like BOTIM and SKYPE, since the network upload is limited to 300Mbps and 20 Mbps respectively.