SXTsq 5ac slow file transfer speed

Greetings,
Tried to search for similar case in forum, but failed to receive usefull hints.
Just got pair of fresh SXTsq 5 ac and using following conditions, got perfect Bandwidth test using between devices, upd/tcp up to 866Mbit both directions:

  1. distance 50m outside
  2. played with Txpower and best figure is 8 on both antennas
  3. Strength -53/-53 dBm
  4. CCQ jumping close to 100%
  5. 5Mhz AC only + 20/40/80 Ceee of course
  6. nstream or nv2 are much slower, so stopped on 802.11ac

But … is file transfer is awfully slow ~40Mbits. Tests were performed in different conditions, even trying to make setup in garage at 20m distance.
PS. LV/RUS/EN answers are welcome :slight_smile:

BR,
Jevgenijs

What program or equipment do you use to measure the speed?

Hello, i use internal Mikrotik BTest tool direclty in devices via Winbox, as well as on Windows.
Connection A: 1st PC windows 10 (BTest) → 1st antenna SXTsq 5 ac → 2nd antenna SXTsq 5 ac → 2nd PC windows 10 (BTest) shows 700Mbits
Connection B: 1st antenna SXTsq 5 ac (BTest) → 2nd antenna SXTsq 5 ac (BTest) shows 800Mbits

But file transfer between PCs in Connection A is very poor, like i mentioned in post about ~40Mbits

BRJe

My Test today

RB1200 ——SXTsqAC -.-.-.Air -.-.-.-.-SCTsqAC—-RB 1100AH

Distance 20m Outdoor, free Channel (checkt with Spectrum in Ligowave), 20 MHz

Mikrotik Modulates @173 MBit
Real TCP throughput in send or receive Direktion is 75-80 MBit, Nv2 is under 50 MBit, nstreame does not work, no connection possible
ROS 6.42 rc 39

I swap the SXT against Ligowave DLB5-20ac
With ipoll3 Protocol we get constant 130MBit real TCP

Looks like we have to move, 50MBit more with one 20Mhz Channel

I will do some further tests and make some photos / screenshots
I will test mimosa too.

Hello. Thanks for your test. I will look forward to continuing the test

Please use real PC’s and file servers (NAS on the other end). Do NOT use the internal test of Mikrotik.

Make sure all your LAN components are Gbit, and tested. Cables, LAN cards on PC, switches etc…

@haik01

Reading before answer…
I Test from RB1200 to RB1100ah
If I test with direct cable they can do about 350MBit TCP, so there is no Limitation for this Test