Recently I started having all sorts of problems with accessing web pages. Facebook was the worse, pages only partially loading, and other pages wouldn't display at all or were really slow in loading. Trying to attach files in a gmail email was almost impossible. I tried everything from from reinstalling windows 3 times, installing to a different drive, checking memory, updating every driver I could think of, update motherboard bios. From memory, these problems started around the time I was reading lots of forums about some of microsofts windows update causing kayos. 

Just to rule out any issue with my internet connection with two degrees(Fibre), I took my computer up to my mates place and tried on his Spark network. Bingo, all problems disappeared.

I phone two degrees next when home, as soon as I described the problem they logged straight into my router and disabled ipv6, now running on ipv4. All my problems on my network disappeared.

My experience may help some else having the same problem resolve it a lot quicker than I did.