I am having the exact same problem. For three weeks or so Shadow worked flawlessly, and then suddenly its so laggy as to be unusual. Audio is full of packet losses and video is really jittery. Couple of observations 1)the connection speed reported through the shadow client is always 10mbps or more less than what is reported in a browser speed check. 2)like you, I'm noticing that the connection speed swings wildly … for me its anything down to 5mbps on my 50mbps package (and the frequency of this chimes with the slowdowns in my shadow pc).
I've lodged a ticket with shadow and they don't seem to find a problem at there end (and I'm minded to believe them - its great on my work pc). The sudden decline makes me think virgin have throttled something somewhere (I'm on an unlimited package)
Virgin have no throttling on the network as per their traffic management document which is regulated by Ofcom.
As both of you say it was working fine and now around the same time isn't it's possible it's an issue with the routes it's taking to get from Virgin to Shadow, a peer could be having an issue or it might have changed to a different peer. Worth looking into.
I've got the same problem. After contacting Shadow, it seems there's a compatibility issue with Virgin. They offered me a refund but I want it to work. I've spent money on games and I can't access them.
If it doesn't get sorted soon I might think about changing ISP.
Me too. The thing is it was working, so someone must have changed something somewhere. I’ve had the same reply from shadow but I can’t get a clear answer as to what the problem *actually* is. ‘Compatibiliy’ doesn’t really make sense.
Have you had any luck contacting virgin about it? Threat of changing isps might lead to a solution.