Antennas Limited signal 10Mb

Good evening,
I have the following problem: our clients have a CPE SXT. they are able to go on WWW through a request PPPOE. At the same time my antennas have a basebox5 board.
All my clients have different accounts related to the bandwitdth they are allowed to use, 2Mb, 5Mb, 7Mb.

the point is: antennas cannot transmit or manage more than 10Mb total traffic (all traffic generated by clients) on our 100Mb wifi; that means no more than 20 client per antenna.

I tried all sw version, and several set ups on boards. Till now i did not find yet a solution to this problem. It looks that there is any configuration that permit to manage antennas and set them up to fit the full bandwidth.

Probably bad signal, alignment or interference. Do you run 802.11a/n with 20/40 ht 2x2 mimo? How the signal tab looks at all clients and Ap at the same time when all are transmitting at maximal throughput?

Maybe is an ethernet negotiation problem, 10mbps.

Signal is between -50 and -75

APs located in different places , have the same problem.
I run a 802.11or nv2, 5GHz - a or 5GHz - n, using almost any configuration, either or on channel 20 or on 20/40 with 2x2 mimo.

CCQ are over 80%, most of the time.
I tried also to turn down Data Rates to increase CCQ and then set them up automatic to avoid any interruption of service.

nothing changes

to Inox:

if u mean ethernet is working at 10Mb, u r wrong… else try to explain what u mean, beacause i dont understand.

Wireless bandwidth appears to be limited to a value… in my case it is 10-12Mb on a 100Mb connection.

is there any chance that default queue settings limit wireless bandwidth??

if it is so… how can i modify those settings to have the max bandwidth?