XR700 Firmware

OK... so here is the update.  I have followed all of the above advice, and over the last few weeks have continually tweaked different settings to try and solve my issues of poor COD play, especially when devices in the house are streaming, and also my mobile phone connection being intermittently slow.  I've tried adjusting the sliders, adjusting QoS, Geo filtering, MTU settings... everything.  I changed the cheap Aztec switch for a Netgear gigabyte switch.  My ISP is fine... there is not a setting I haven't tried.  Upshot is, I called in an IT guy of mine and we took out the XR700 and installed a temporary mid range Draytek router.  The results were instant.  I played 10 games of COD and topped every game with twice as many kills as everyone else, and QoS wasn't even enabled! this test was undertaken during a busy evening time period, where an ISP would normally throttle the connection, and with 6 devices in the house streaming YouTube simultaneously over ethernet and WiFi.  The Draytec had to go back a few days later as it was for testing only, and I have now uninstalled the XR700, and set my ISP router back to router mode from modem mode.  Gaming for a day now, and there is not much real difference from when the XR700 was there.  So... after much time and money wasted, and with the XR700 STILL being on a Beta version of Duma3.0 I have decided enough is enough and will be selling it, as it clearly does not do what it is supposed to... I don't think it was a faulty unit, as I upgraded to it from an XR500 that had similar issues.

Would be nice to know if the ISP modem had been bridged or not considering it's a gateway modem and could cause problems. 

What Region are you located? 

https://community.netgear.com/t5/Nighthawk-Pro-Gaming-Routers/New-XR700-Firmware-Version-1-0-1-50-Released/m-p/2291770/highlight/false#M32821