Almost 20 hours and still installing a 9 GB update...

Taken me a day to download Halo 5 and I've still got 6% left to go! Lol.

As a rule if downloads are slow for one game they will be slow for everything.

For instance. When Advanced warfare got a new pack and a title update once not only did the title update take hours to download but it took me 3 hours to download a system update. Seems that a popular download can bring the servers to a standstill.

I have a feeling there will be major slow downs when Fallout 4 is released and loads of people are downloading the day one patch. The slow downs wont just be for Fallout 4 they will effect everything.

This is where changing DNS can help as the ISP's DNS will send all it's customers to the same download servers causing congestion.

But a non ISP DNS like googleDNS, openDNS unblockus may send people to a less congested server meaning they get a faster download.

I don't use googleDNS personally. Only mentioned that because the IP address is easy to remember. I use unblockus but I know from experience that if I was to switch back to my ISP DNS I will have pathetic speeds when Fallout 4 is released but with my current
DNS I should get fairly fast downloads.

The speed you get running the detailed diagnostics always connects to a server in Seattle no matter where you are in the word. It is not determined by DNS.

The store downloads and updates all come from various content delivery network(CDN) servers around the world.

The CDN you connect to is determined by your DNS.

You can determine your actual download speed by checking the bandwidth usage in the network app. There is a stat for current usage. Just check current usage while something is downloading. If the speed is a lot lower than the speed listed in the detailed
network stats then you are connected to a slow CDN and may benefit from changing DNS.

If both stats are about the same the there will be no need to change DNS.

Changing the DNS is not really the issue. You have to consider multiple users are having exactly the same problems around the world and they are all with different ISPs using totally different DNS servers. This is a Microsoft issue. Google the problem
and you will see it's not just an isolated few people who are having the problem.

Yea, I know it isn't something typical. I think it started as an issue with the servers this patch was coming from as everyone basically had issues in the beginning trying to download at once. I don't know if that has caused another issue that is causing
my game not to full update properly for almost 24 hours now. So far I was able to get it up to 93% by turning off the Xbox, unpluging, replugging then restarting it two times. Now I just now tried a 3rd time and now I am not logging in and getting a "It
might be a problem on our end. We're working on it."

I honestly wouldn't be as frustrated by this if I was still able to play offline single player while this update was downloading or if they just pushed back the release date to fix issues, bugs, ect. that this 9gb patch is supposed to resolve and released
a disk copy that was fully functioning out of the box.

You said Xbox is more like a computer now... and that is the problem. Gaming on a system was never this much of a hassle as it is now a days. Put in game, power on and play. Now you have to be a computer expert to see why your console is not working
properly just to play a simple game. I do not like this direction gaming is going. While Xbox to PC connectivity seems cool it is not worth all the issues that are arising.

As a side note, I work 2 jobs just to make ends meat and I have limited free time as most people probably do. I do not have time to wait days to play a game that I want to play.