Could we PLEASE, please, PLeaSe get more granular control mechanisms with regards to download speeds? If one device starts downloading e.g. a game of 100Gb, it brings the entire network down to its knees. No amount of fiddling with the priorities in QoS resolves this.

If we could just set a download cap manually per device, would be enough. 

I love the Deco M5 because of its simplicity and just-works approach, except for the lack of control on bandwidth, which makes it really UNUSABLE. Seriously.

The QoS controls simply doesn't suffice.