We have a two floor building with one ruckus 7372 access point on each floor. All the floors (ground, first floor and second floor) are open plan. Ground floor has 20 users, first floor 10 users and 2 users on the second floor. Some how when we are connected to the lan our internet speed is fine, but when we connect via the wifi the speed is extermely slow. Please help, what could be the problem? Oh, our zone director is 100D.