PoE limit to 200mbps

You changed the settings on the both sides?
If you want to properly test the wireless connection/bridge, put a computer running openspeedtest server at one end and another computer at the other end and test it!

I’m sorry, how should I do all this?

i lunched speedtest from terminal from transimetter:

/tool bandwidth-test 23.162.144.123 user=North-Idaho-Btest-Server pas
sword=I-Am-Not-A-Cron-Script direction=both
                status: running
              duration: 53s
            tx-current: 388.6kbps
  tx-10-second-average: 319.1kbps
      tx-total-average: 501.6kbps
            rx-current: 213.7Mbps
  rx-10-second-average: 209.0Mbps
      rx-total-average: 204.4Mbps
          lost-packets: 2119
           random-data: no
             direction: both
               tx-size: 1500
               rx-size: 1500
      connection-count: 20
        local-cpu-load: 29%
       remote-cpu-load: 10%

Don’t test ON the devices themselves.
They are not really suited CPU wise to handle that load. Your results will be too low because the local CPU most likely will not follow.
You are also testing via your ISP. You don’t know what the impact is there.

Use 2 PCs within your network, one on each side of that link, both having iperf3 application and test between those 2 PCs, crossing the devices to be tested.
Then you also are sure you’re only testing your network on its own, not your ISP (that can be looked at later).

Side notes:

Why is hardware offload disabled on ether1 of the “transmitter”?

/interface bridge port
add bridge=bridge1 interface=wlan2
add bridge=bridge1 hw=no interface=ether1
add bridge=bridge1 interface=wlan1

Try setting it hw=yes.

You have a DHCP server attempting to run on a slave interface (same ether1)

/ip dhcp-client
# DHCP client can not run on slave interface!
add disabled=no interface=ether1
add disabled=no interface=bridge1

Disable or remove it.

I should understand how iperf3 works

Disable both?

You have a DHCP client on ether1 that cannot work because ether1 is part of (slave to) the bridge.
Ros is trying to tell you that.

The one on bridge is running, you should know whether you have need for the devices to use it or not.
Very likely not, as the two devices should form a sort of “wireless wire” bridge and all the connections should happen at L2 level, it is (should be) like the two devices are a single switch (transparent) for the network, the devices need not an IP address if you access/configure them via Winbox using their MAC, while they may need one for access via browswe/webfig.
The “other side” (receiver) has also a DHCP client on bridge.

Hi, I’m back, sorry for my absence.
So I tried, as someone suggested, to test the connection between the two ptps with IPERF. And this is the result.

Connecting to host 192.168.1.100, port 5201
[  5] local 192.168.1.180 port 56340 connected to 192.168.1.100 port 5201
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  5.25 MBytes  44.0 Mbits/sec
[  5]   1.00-2.00   sec  5.38 MBytes  45.0 Mbits/sec
[  5]   2.00-3.01   sec  5.75 MBytes  48.0 Mbits/sec
[  5]   3.01-4.00   sec  5.00 MBytes  42.2 Mbits/sec
[  5]   4.00-5.01   sec  4.50 MBytes  37.6 Mbits/sec
[  5]   5.01-6.00   sec  5.00 MBytes  42.1 Mbits/sec
[  5]   6.00-7.01   sec  4.62 MBytes  38.7 Mbits/sec
[  5]   7.01-8.01   sec  5.38 MBytes  45.0 Mbits/sec
[  5]   8.01-9.01   sec  4.88 MBytes  40.7 Mbits/sec
[  5]   9.01-10.01  sec  4.12 MBytes  34.8 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-10.01  sec  49.9 MBytes  41.8 Mbits/sec                  sender
[  5]   0.00-10.02  sec  49.9 MBytes  41.7 Mbits/sec                  receiver

iperf Done.

ip .100 is pc where is connected the receiver
ip .180 is pc where is connecet the transimitter

I also disabled DHCP on ether1 as suggested.

There exist a lot of PoE injectors that are 100mbit capable
You need the Gigabit model https://mikrotik.com/product/RBGPOE

please double check you have Gigabit written on them

Thanks for your response,
However i have gigabite PoE injector