Hi

Looking for some advice, I presently have 2x TP Link CPE 210 located in 2 seperate buildings for wifi/internet support. A 3rd building has an AP, and internet is shared from that building. All buildings are within 50 meters of each other, foliage is cleared, everything is line of sight, in the country.. The buildings however are tin/metal, and I wonder if that has anything to do with the high rate of transmission I am seeing on the CPE interface, maybe signal is reflecting in an unwanted manner ? 

I've included some stats below from one of the CPE, but basically the throughput is so terrible it struggles to stream amazon music on a single alexia device in one of the 2 other buildings.  Copying a file from 1 PC to another PC in a different building, is snail slow. I swear there is a black hole or alien space ship close with in the vicinity, because honestly, this should work so much better than it presently does, and I'm not asking much here. 

When it snows fresh on the ground, and ices over, the Wifi signal can barely carry a continious ping without dropping packets, its crazy. The AP and CPE devices aren't covered in snow, nor can I see any obvious issue.  One thing I have noticed is in the CPE device the TX rate is usually high, but the RX rate is low, 1-6 mbps, and when an "issue" is happening, its almost always at 1 mbps. 

Anyways I am going to try replacing the AP (Was a Wavlink 600, and recently instated an old Linksys E2500 router) the E2500 router inside seems better than the wavlink device mounted outside the building! As the Wavlink device has recently become even more flakey, I want to replace it with something decent. 

Both buildings with the CPE 210's I am targeting are to the west of the internet/AP building, so something directional  ( TP ??? ) would be ideal versus unidirectional  (EAP 225).

Any recommendations on what TP I can try here to improve things, other than burying some wire?  All of the CPE and AP are mounted outside the buildings and can literally 'see' one another visually. Like if I was a wireless packet, I would freely confidently jump into the air medium and just float to the other side, I am absolutely astounded to the trouble I am having, in the country.  I do see other 2.4 ghz networks, but they are coming from very far away (say over 500m+). I would really not like to buy all new hardware and goto 5ghz if that can be avoided. 

Status from one of the 2 CPE devices - stats are similar amongs them. 

ath7      IEEE 802.11ng  ESSID:"efc"  Nickname:"CPE210-house"
          Mode:Managed  Frequency:2.437 GHz  Access Point: 58:6D:8F:A9:72:AE
          Bit Rate:144.4 Mb/s   Tx-Power=25 dBm
          RTS thr=2346 B   Fragment thr:off
          Power Management:off
          Link Quality=93/94  Signal level=-55 dBm  Noise level=-95 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

$ apstats -i ath7 -v
VAP Level Stats: ath7 (under radio wifi0)
Tx Data Packets                 = 17109101007863808
Tx Data Bytes                   = 9394984056531189760
Tx Data Payload Bytes           = 8605875066766360576
Rx Data Packets                 = 13269718072819712
Rx Data Bytes                   = 6513761256678098833
Rx Data Payload Bytes           = 5900718051711516672
Tx Unicast Data Packets         = 17109101007863808
Tx Multi/Broadcast Data Packets = 0
Average Tx Rate (kbps)          = 130000
Average Rx Rate (kbps)          = 6500
Rx errors                       = 73014444032
Tx failures                     = 974957576192

$ apstats -i wifi0 -r
Radio Level Stats: wifi0
Tx Data Packets                 = 17149203117506560
Tx Data Bytes                   = 9422456067515744256
Rx Data Packets                 = 13289870059372544
Rx Data Bytes                   = 6519303199009015700
Tx Unicast Data Packets         = 17149203117506560
Tx Multi/Broadcast Data Packets = 0
Channel Utilization (0-255)     = <DISABLED>
Tx Beacon Frames                = 0
Tx Mgmt Frames                  = 4067
Rx Mgmt Frames                  = 4578044
Rx RSSI                         = 42
Rx PHY errors                   = 403901
Rx CRC errors                   = 3972401
Rx MIC errors                   = 0
Rx Decryption errors            = 55834574848
Rx errors                       = 73014444032
Tx failures                     = 974957576192
Throughput (kbps)               = <DISABLED>
PER over configured period (%)  = <DISABLED>
Total PER (%)                   = 12

Signal Strength (Horizontal/Vertical): -68/-68 dBm
Noise Strength:   -104dBm
SNR:  39dB
Transmit CCQ:  99

Root AP SSID: efc
TX Rate: 144.4Mbps
RX Rate:  6.5Mbps   <- mmm spicey.

thanks,

Jonathan