I would suggest reading the thread:
http://forums.windowscentral.com/wi...ows-10-mobile-insider-build-10586-thread.html
How stable is build 10589.29 for Lumia 1320?
Hi, in my 1320, build 10581.29, the phone is performing good, but there is occasional freeze when coming from an app to start screen. Usually when the freeze happens, I just hold the power button until the phone restarts.
No other issues, whatsoever.