Sun Nov 06, 2022 3:02 pm
I would start over with default rules and only add the top parent queue until it works. Since 192.168.88.0/24 matches the local IP, it should catch both the bridge (LAN) and ether1 (WAN). The child queues you add below the parent queue need their DHCP leases set to static and, with minor exceptions, FastTrack will bypass all simple or tree queues, so that rule needs to be disabled in the firewall.
You'll find lots of documentation regarding packet flows in RouterOS online. You could also use a single simple PCQ/SFQ for fair queuing if you don't need data accounting from clients. Posting your config with the private bits removed might help you get more answers...