Gaming issues with hub5x

Hello recently I have been having issues with my broadband connection and are a new customer, the issues I have include lag spikes in games, speeds dropping on on the router (which I have caught on samknows real speed test) videos and video previews lagging on YouTube, this happens on both a mobile phone and Ps5, I have had an engineer out and we suspected that it was something to do with jitter and should sort itself out within a day or two but the issues have continued and another engineer has been booked for next week, in the meantime I have done a BQM monitor for the last day and cannot interpret the results, any help to identify if there is a problem will be appreciated. 

P.s Will a cropped screenshot of the BQM be sufficient as I do not know how to hide my ip.