Thanks to everybody for your answers! I have changed to a nanostation M2, that it is a little bit stable and powerful, but the ccq is also no very high so my connection is unstable. It's a net...

Model : cpe210 Hardware Version : v1.1 Firmware Version : 1.3.3 Build 20160526 Rel. 4923 ISP : Hello everybody, Although the SNR is high (30), so the CCQ too, I have tx/rx rates that vary a lot...