I have a TP-Link WR841NDv7 and QoS used to work great on my router. Last week, I tried adding some new rules to some games I play online, but the router refused to set the connections under the classes that i've chosen for them. In a desperate atempt, I tried removing every rule and class and adding the basic ones again to see if it did work. Now all connections just go to the default class.
The weird thing is QoS upload still works, having the same rules on both QoS upload and download, the same connection get the supposed class for upload and the default class for download. I'm running Gargoyle 1.5.7.
Here are some images showing what is happening.
I really want to get this running again, QoS on this firmware is amazingly good and easy to setup.