I’m wondering…most of these issues are similar but not very widespread, but the network error seems to crop up in many of them.
So what is the common problem?
One problem, similar but clearly identifiable is AV interference…namely Symantec products ‘eating’ the download. This doesn’t exclude other AV products from interfering in some manner, just that the Symantec/Norton issue is ‘known’.
Another potential commonality…ISP interference.
A third potential…operating system problem.
So, check your AV…whitelist or temporarily disable it for this download only (or try an alternate AV), try something in the same size range from somewhere else…streaming video from Hulu or something…if it buffers a lot, then there is likely some kind of ISP/network problem on your end. Same goes for the last item…but can be a bit harder to pin down, specifically. If on Windows, make sure you are malware ‘clean’...