Here are the issues i'm running into with 10581 so far.. some of these are still issues from past builds..
Nokia 1020 on straight talk here..
1. Battery life is a tad bad.. start a day at 9am with 100% battery, by 5pm its often 20%, this is with very minimal checking of emails, maybe 20 mins of use throughout the whole day..Insider app shows discharge rates of -4 to -9 per hour, though some periods only -1 or -2 all depends. With 8.1 i'd have around 60% by 5pm on avg. Example today: 1030am, 95%, by 1210pm i'm sitting 84% (and hadnt touched the phone). I have wifi and bluetooth turned on, but bt is not in use.
2. Gmail large email messages, click download and they dont
download, ever, same for attachments
3. Send an IE web page via email, giant outlook splash comes and takes a very long time to send if it even does
4. Not really an "issue" but a peeve.. that Edge pinned icons no longer show a thumbnail of the webpage being saved
5. Occasionally some of the bult in apps will just vanish and crash, like messaging
6. Photos app is faster, however, there are times you add /take new pictures and go back in, hit refresh and they just dont show up
7. Get notifications in notification center about new email.. if you clear them there they dont clear in the tiles and vice versa
8. Sometimes tiles dont update (fast enough) to show new messages or cleared ones in outlook pinned folders (its working better though)
9. Certain
music streaming apps (not pandora or mainstream ones) will not work unless on wifi (why?)
10. Installing apps from windows store history on a pc doesnt work
11. Teamviewer seems to be gone from the store at least for win 10.
I did a hard reset (unsure if was needed) to get live tiles working for pinned outlook folders though. 10572 was a mess in general in terms of stability and sluggishness, 10581 is what i would call an 80% improvement, certainly on stability and speed (no crashing or unloadable start screen issue now too) at least on my nokia 1020.