How to increase the transfer rate of big data Ubnt Nano beam - m5 16?

Question

Computer networks

Good afternoon.
Costs two Ubnt NanoBeam M5 in bridge mode.
When transferring large files through the bridge, the speed is about 3-6Mbps.
BandWidth tester from mikrotik between two computers through the bridge shows a speed of 60Mbps in one direction.
NetCPS gives out ~4MBS between two computers through the bridge.
In practice, the feeling that I'm sitting on a 5 Mbps Internet.
Here is the AP point info:

Device Model: NanoBeam M5 16
Device Name: MCM NanoBeam M5-01
Network Mode: Bridge
Wireless Mode: Station
SSID: #####
Security: WPA2-AES
Version: v5.6.3 (XW)
Uptime: 8 days 22:49:39
Date: 2016-03-23 15:37:55
Channel/Frequency: 149  /  5745 MHz
Channel Width: 20 MHz
Frequency Band: 5735  -  5755 MHz
Distance: 0.1 miles (0.2 km)
TX/RX Chains: 2X2
TX Power: 8 dBm
Antenna: Built in - 16 dBi
WLAN0 MAC:#####
LAN0 MAC:#######
LAN0:100Mbps-Full
  
AP MAC: ##########
Signal Strength:  -62 dBm
Vertical / Horizontal: -65  /  -64  dBm
Noise Floor: -102 dBm
Transmit CCQ: 99.1 %  
TX/RX Rate: 144.444 Mbps  /  144.444 Mbps
airMAX: Enabled
airMAX Priority: High
airMAX Quality:  97  %
airMAX Capacity:  93  %

Here is the station info:

Device Model: NanoBeam M5 16
Device Name: MCM NanoBeam M5-02
Network Mode: Bridge
Wireless Mode: Access Point
SSID: #######
Security: WPA2-AES
Version: v5.6.3 (XW)
Uptime: 8 days 22:43:46
Date: 2015-12-10 02:18:40
Channel/Frequency: 149  /  5745 MHz
Channel Width: 20 MHz
Frequency Band: 5735  -  5755 MHz
Distance: 0.1 miles (0.2 km)
TX/RX Chains: 2X2
TX Power: 8 dBm
Antenna: Built in - 16 dBi
WLAN0 MAC:#######
LAN0 MAC:########
LAN0:100Mbps-Full
  
AP MAC: ######
Connections: 1
Noise Floor: -106 dBm
Transmit CCQ: 99.1 %  
airMAX: Enabled
airMAX Quality: 97  %
airMAX Capacity: 93  %
airSelect: Disabled

What parameters should be turned? M.b. is this how airMax optimizes?

Answer 1

During the initial setup, when choosing a country, select Compliance Test.