Every few weeks, maybe once a month, our upload speed crashes down to about 4Mbps, where as it normally sits at around 36Mbps.
I stream on twitch, it's a big hobby of mine, but when it does this is makes it all but impossible to do.
Basically every now and then, the frames I'm sending out will crash down to hardly anything and make it unwatchable. This can go for 30minutes to several hours.
While this happens I usually check task manager and check the performance tab. When this is occuring it's always spiking like crazy. When I test the speed, download is great (350ish) but the upload is tanked down to 4. My partner's PC shows the same thing (note: she isn't streaming or uploading anything).
Both PCs show that they are not uploading anything (other than the stream) and the 2 phones and one tablet are not uploading. Given both PCs show it's happening I'm lead to assume this on Virgin's end?
A sidenote, I will often drop frames in small amounts (maybe 400 frames which is just a few seconds) maybe 2 or 3 times over a 3 hour period, which is a problem I've not seen others have but isn't that disruptive, but as it may be linked I thought I'd mention it.