Riyadus1

/ip firewall mangle
add action=mark-connection chain=prerouting disabled=no dst-port=8440-8600 new-connection-mark=bigo passthrough=yes protocol=udp
add action=mark-connection chain=prerouting comment=bigo disabled=no dst-port=306 new-connection-mark=bigo passthrough=yes protocol=tcp
add action=mark-packet chain=prerouting connection-mark=bigo disabled=no new-packet-mark="Bigo Live" passthrough=yes

/queue simple
add burst-limit=0/0 burst-threshold=0/0 burst-time=0s/0s direction=both disabled=no interface=all limit-at=2M/2M max-limit=2M/2M name="Bigo Live" packet-marks=\
"Bigo Live" parent=none priority=3 queue=default-small/default-small target-addresses="" total-queue=default-small