It happens like this
So the default is obviously the slow
I select fast then I clicked the back button then I went back to the fast/slow ring page only to find it was back on the slow
I have also...

That one I'm sure it's cause flight settings transferred from 10130 to 10147...
But in this case I did a clean install from cd.

I have backups of my keys in case anything goes wrong :)

Lucky you... Strange cause I did a clean install and I have that issue...
Maybe if you did me a favor bro and passed the following registry keys to me from 10147 :) ...

Yes. You'll be able to upgrade 10147. Here's the catch. You'll have use an ISO to upgrade. You can't do it through WU. Reason... There's a major UI bug when u try to select which ring u want in...