Thanks Tobacco. It seems better with your settings, but still lose some pings. I forgot to tell that both the AP and Client are wall-mounted on a steel building.

Region : Canada Model : TL-WA7510N Hardware Version : V1 Firmware Version : 3.12.6 Build 130427 Rel.69746n ISP : Hi guys, I installed 2 TL-WA7510N 100 meters apart. I tried multiple configurations,...