Sideface:littleninjaman: yeah I do a lot of cloud storage. A lot of my stuff backs up online with different services etc. But even if not uploading I still have these issues. I have up to 10 devices but maybe up to 3 on the internet at once. there is a couple of pcs, tv, xbox, and cell phones. my internet speeds are fine I have no complaints about the speed. I've even only had one device on the network at once and still happens.
Your sort of usage would "kill" most ADSL connections.
You need VDSL for the higher upload speeds.
normally its pretty good, i do upload alot of big things to the cloud but normally when no one is using it and its also speed limited so not so it doesn't kill my internet. But yes if you don't limit the uploads the internet goes very slow lol