I'll admit, I do not know enough about MT yet to have a smooth operating system, I know enough to get me into trouble..
At an apartment complex, I have some UBNT wifi APs on its own subnet, as well as direct connections to each rooms, on their own VLANs as well.
I have queues for both interfaces to limit the speeds to 30/2. For some reason the queue I have for the wifi does not seem to be working correctly.
Watching it now for example, when the que is enabled, download speeds range from 1mbs to 3.5mbps, sometimes 4mbps.
As soon as I disable the que, speeds shoot up to 10mbps or higher.
Similar things happen for my other queues to the hard wired rooms that are on VLANs..
Here are some screenshots of my setup.