I have a strange problem. Have about 20 532 routerboards as AP for 2.4Ghz with another 5.8Ghz card for PtP link. One of the APs started to show really bad performance - clients have pings like 2000 - 2500ms, firstly i changed 2.4ghz card, then whole routerboard, pigtails, cables, antenna...no change
I also tried to limit the connected clients to just one client which has great signal etc...no change. I tried with another AP (ovislink and linksys) and it works fine (pings like 10ms). The place where this AP is situated is very crowdy...GSM antennas, FM radio antennas, police station antennas etc. But there are also other APs with similar situation and they work fine?