1) Firstboot, setup pass, wifi, adblock, ...
2) set QoS download: d-throttle 17% zero 380
3) set QoS upload: ....u-throttle 17% zero 10
4) Set Quotas:

The issue is that navigation is very slow for throttled devices. It seems that the cuprit is that bandwith is being under delivered:

With 1 only active device under the quota, I expect it to have available the full 380 Max BW (kbps). Instead Load (kbps) randomly flows (e.g. 30, 65, 101, 70, 200, 105, 69, ...).
The device IS trying to pull content. I have tried other devices simultaneusly, but still the router isn't delivering the corresponding load. I've throttled before in v1.9.2 with no issues.
Archer C7 v2, Gargoyle v1.10