I was having very similar problems (huge ping spikes and dropped packets) which made work conference calls & video calls torture. This thread has some ideas which helped the situation, but hasn't fully resolved it.
Basically set a digital timer on the Hub 3.0 power supply to power it down for 5 minutes at 04:00 every morning. The behaviour is now significantly better, although I am still booted out of a conference/video call once every day or two due to bad pings & dropped packets.
Your downstream signal frequency 259Mhz is out of spec at -6.2dB
This must be between -6dB to +11dB to maintain a stable connection to the Virgin Network.
I'd check all cables for any damage and that all connections are tight. Also checking any outside cable's if you have any and the connections in the External Termination Box if you are able to reach it.
As the frequencies range so much there must be a loose connection or damage somewhere.
If you can't fix it then you need to get in contact with Virgin informing them that your equipment is out of specification and causing intermittent service.
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I am a Service Field Technician at Virgin. However, all responses on here are based on my experiences in the field alone and my own equipment at home and should be taken as such
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Thanks @Harvey_H I have checked everything I have access to and it all seems fine.
The green cabinet closest to the building looks undisturbed and the first connection I can get to is in the property as the cable comes straight in. Inside looks to be in good order, everything is still stapled and not disturbed.
All connections checked, factory reset the hub and only one Ethernet from hub to desktop.
@Lee_R, it feels like it is getting worst, constant kicks and stutters on streams and conference calls.
I want to thank everyone for their support and offers of help and guidance.
A virgin tech came out and checked everything, not saying this is everyone's fix, but he changed the connection in the green cabinet as the power delivery was out of range. Not saying this is everyone's fix but this was mine.
No more dropouts, back in modem mode using my Asus rt-ac87u which wouldn't connect. I know people search for this because I did and found mixed results. I found, turn asus on first and let it boot up fully then switch on hub and it seems when it boots it cures the dhcp issues.