I am using 14295 on my 1520.3. It's rough going, too rough for a daily driver. Mainly, I must stay plugged into electric power (a battery actually) or it crashes. Also, I had to hard reset because the WiFi became unusable, very difficult to connect and never remembered passwords. The hard reset fixed all that, for now anyway.
I'm going to see how 14322 works. It's supposed to be out in a couple of days. But if it's not a lot better than 14295, I'm going to roll back to 10586.
It's interesting (and good) to see others having fewer problems than me.