Dear All,

I have a remote office (2 KM) away from my headquarter. They have both Senao Long Range Multi Client Bridge/Ap, with 24Grid Antenna. They both used to work really well for months at ~80 Quality and 11Mbps transmission rate!
One day the internet speed at my office dropped from 3 Mbps to 256kbps, I tried to play with it and change some configuration bu that didn't help.
I order my blacksmith to create a 6m tower to have better line of site (which is by default good), but that didn't help!
The transmission rate varies between 11Mbps and 1Mbps and keep changing!
I made sure that the antenna are pointing each other! but still no luck.
Today I change my other end with a flat Antenna, but that didn't help as well!
I am not sure what is going on, and what should I get to return that link as good as it used to be!
Now I discovered that if the link is at 11Mbps (no activity on the line), but once I do any activity the transmission rate drops! What does that mean!!! what the Antenna/AP is trying to tell me? How I can fix this?

Thanks,