i was running a wired network but all of a sudden the wireless ISP thing started in my city. I got a mikrotik rb 433ah with 3 sectoral 120 deg antenna, and have added almost 20 clients running on 2.4 ghz.

My problem is that on one of my sectors if 7 or 8 active clients r connecting then the ping reply from the client starts to break and the latency goes very high like 600ms - 3000ms.
When I block few of my clients which is cybercafe etc. then things come to normal like between 1-3 ms

I have heard that i can connect like 50+ active clients on each sector. Please suggest what needs to be done. Also can someone help me with configuring the rb433ah OS 3.0 FIREWALL.

2,4 in b? How much traffic You have on this interface (and pps)?

i have 4 mbps bandwidth from my isp. my clients r using 256 kbps broadband on each wireless CPE. i hv come to know that virus on the client end causes problems. how do i control that.

pls advise.