I can't blame the Router People, only myself. Their issue as with so many is the support people have no understanding of router workings (including yours truly). only an answer sheet much like FAQs.
I didn't get the UpLink issue with QoS, but closer reading of their manual does mention uplink it says "Enable or disable the QoS application to prioritize different client applications/traffic types over the Internet.". Being ignorant and finding very little help anywhere, I tried to use QoS to prioritize, but to no effect.
My issue is that I am using Chromecast, through a Western Digital N900 Router. and with the various wireless devices and the reduced internet speed at 5 pm or so, watching Netflix is a challenge. Chromecast may also be the issue. It connects, then disconnects, loses itself. Then Netflix can't be found, then it loads, then buffers, then waits, then plays, then disappears, and on and on. But then for several nights it works great. I don't get it. During the worst time I checked with speedtest and was getting just under 30 MB download. The signal with phone and tablet is 3 of 4 bars in the same area, so I was guessing that if I could prioritize the chromecast or Netflix, then I'd get better reception.
Do you have any suggestions?