Hi,
I never liked slow internet connections, but well - sometimes life isn’t as perfect as it’s imagination 
I’m now stuck for quite a while with 15/2 DOCSIS connection. While is rather OK for browsing the internet everyday trying to download anything using it is a horrible experience. As soon as I start downloading a file opening webpage becomes a challenge. Firstly I tried to explain to myself that my experience is affected by the fact I had 100/100 FTTB for few years, but it’s actually a real thing - opening this forum page took me 37s!
I don’t know DOCSIS stuff well (besides general terms and signal levels), but I think problem leads in upload - while file is downloaded trying to push anything out is a real problem.
Is there a way to make this connection usable? Even my 3G shared from smartphone is less fragile to downloading and browsing in the same time 
Unfortunately there’s absolutely zero chance to get fiber here - the only alternative is another DOCSIS or even crappier ADSL.