[gavinray]

  > It is quite normal that things break on the Windows Insider Preview builds from time to time right?

I run the Dev channel [1] (most frequent releases). And I don't think I've ever had anything actually break.

Mostly it just makes my computer unusable every time they push an update, because it uses 100% disk capacity trying to background install while system is live. The background updates usually take 4-6 hours.

I also run Edge Dev and I HAVE had features break entirely on Edge, twice. Usually fixed within 1-5 days.

  [1]: DON'T DO THIS! You cannot downgrade to Beta/RC from Dev, and it's the only channel that's like this!
       Read the fine print. I receive updates sometimes multiple times a week and it's terrible.