@DWUK so basically QoS is a myth. Doesn't matter what settings I use, as soon as the Mac starts downloading in the background it uses all available bandwidth. The only way to stop it is to block it...

@DWUK didn't make any difference. As soon as there is any download activity in the background, it takes all of the bandwidth.

I have TV set to high priority (always) and QoS set to streaming (high) and downloading (low). Whenever my Mac (not high priority) downloads software updates in the background it takes all the...