Random scrambling on certain channel

Hi all, not sure how to word this or what the answer is as I am kinda stumped, basically my daughter watches alot of disney channel jr and recently problems have started on it, around 4pm to about 9pm last 2 days it has been periodically scrambling every 2 mins for 5-10 secs, I would normally attribute it to my connection to router OR my provider however I think its quite unusual as it doesn't seem to do this on other channels.

Tested it on sky sports news (quite a popular pay channel) after getting periodic scrambles on disney channel, everything is fine, no scrambling/glitching at all, reset router sky sports news fine still, flick over to disney channel then periodic scrambled channel again, its becoming quite unbearable as my daughter loves all the programs on there and hasn't been able to watch things last few days, is it really more used than ssn and could my provider being overloaded be the issue or could this be something else?

Using an Mgcamd connection on a skybox f5s via ethernet on an 8mb unlimited broadband connection, I use a cheap usb stick (not drive) for my 7 day epg, not sure if this can cause any lag/delay at all.

Thanks for reading and help much appreciated, line has been solid for last month with ZERO downtime on any channel so doubt its my provider.