I have been running it on my old phone Lumia 925 and it has become so so slow. That is why I have some doubts with my main phone 830. Thank you for your answers!
On my Canadian 830 variant build 10586.11 was OK (not great) initially but after a couple of weeks performance began to degrade, all aspects of the phone, including some apps became slow/laggy along with screen going blank (not freezing) which required a restart to rectify, reverted back to W8.1 after the third incident of latter and where I'm sitting now.
Can't say what build 10586.29 would be like but am a little sceptical after reading many posts indicating inconsistencies still abound on same/similar devices, the battery drain saga doesn't make it very enticing either, as many will state YMMV and something MS needs to get a handle on, more consistency across the board.
Too bad I haven't read your post earlier I went ahead with it as I was postponing for six months I guess. Hopefully all works out!
All core apps update once a week. Sadly, after update they set themseves at default state in Background battery often.
I've found after a massive update all stupids office apps, facebook, etc, all set to ON. My 520 was agonyzing
Now works fine except cortana, but we have to stand by her a little more: she's a Lady!
Performance should at least be acceptable on a Lumina with 1Gb memory. If that is not the case, consider that it might be a migration issue trying to move all of your existing settings to the new OS. This can "usually" be fixed by going back to WM 8.1 (with the Windows Phone Recovery Tool), getting all the 8.1 updates, then downloading the Windows Insider app and getting back on the Windows 10 Mobile upgrade. Follow the instructions here.
I deeply regret having Win10 on my 830. Not one thing is working properly! Shutting down pages, blank screen, battery does not even last one day, camera works every second day, selfie stick doesn't work anymore, music groove is just hideous, etc etc,.... Guess I will have to go back to Win8