Prevent bufferbloat by limiting up/download speed.

Prioritize host (192.168.1.100 in this example)

Disable fasttrack connections in the 'IP Firewall' and 'IP Settings', otherwise this traffic will bypass queues.

Configure simple queues:

# Parent queue, example vlan123 is inside LAN
add dst=ether02-internet max-limit=20M/45M name=internet queue=sfq-default/sfq-default target=vlan123-lan total-queue=sfq-default

# Prio host
add dst=ether02-internet limit-at=10M/40M max-limit=18M/43M name=prio-host parent=internet priority=2/2 queue=sfq-default/sfq-default target=192.168.1.100/32 total-queue=sfq-default

# Other traffic
add dst=ether02-internet max-limit=18M/43M name=others parent=internet queue=sfq-default/sfq-default target=192.168.1.0/24 total-queue=sfq-default