There is hAP ac ^ 2 with 1 Gbps uplink in ether1 (DHCP client);
The 1st laptop is connected by a 100 Mbps link in ether2 on mikrotik;
2nd laptop connected with 1 Gbps link in ether3 on mikrotik;
3rd laptop connected with 1 Gbps link in ether4 on mikrotik;
Mikrotik has default configuration (except for Wi-Fi settings);
The ROS version is 6.43.8 (stable).
Problem / oddity:
on the 2nd laptop, an iperf-client is running ~ 560 Mbps;
at the same time, I launch the torrent client on the 1st laptop, the file download starts at a speed of 95-98 Mbps and ... the speed of the iperf on the 2nd laptop starts to “jump wildly” - 10-150-400-300- 5 Mbps and so on.
I turn off the 1st laptop, turn on the 3rd laptop instead and start the torrent client on it: the download speed is 300-400 Mbps and iperf on the 2nd laptop does not notice anything and continues to give ~ 560 Mbps.
Question: how to overcome this disgrace? Why, when a device with a 100 Mbps link starts to recycle its 100 Mbps, the rest of the devices suffer?