Just assigned a static IP address to your console(s) and match them up under "Gaming" rule thru the GUI inside the FlexQoS tab. This will ensure all traffic within gaming is recognized! How many gaming devices do you have?
We have three that are on most of the time. 2 of them being PC's and the other being an Xbox One. Cake seems to be ok but I sometimes get pretty big lag spikes (although it might be Virgin Broadband screwing up atm). Would bandwidth limiter be a good option for a house with multiple gaming devices and streaming services going on at the same time? Or should adaptive QoS do the trick in terms of keeping latency low?