No option to disable required password waking from sleep in 1607

Brink said:

Have you disabled UAC, or set UAC settings to "Never notify" instead of the default setting by chance?

As a matter of fact, yes. While looking for that setting I first ended up back at 'Settings►Accounts►Sign-in options►Require sign-in" and found the last time I set it to 'Never' hadn't stuck. It was at "When PC wakes up from sleep" again.

Set it to 'Never' again, and when I found my UAC settings I changed it back to default and rebooted. After reboot I was able to sleep, and come out of sleep without the password prompt. So I set 'Sign-in options' back to 'Never', UAC to 'Never notify' and rebooted.

The password issue was solved, but then I found the power plan I'd made earlier and set to turn the screen off in 1 second and sleep in 3 seconds doesn't put the system to sleep anymore. So I deleted it and created a new one with the same settings. It won't go to sleep either.

This happened all the time back in Windows XP days with power settings. But up to now I thought W10 had put those old problems to rest.

Any ideas what may be going on here? These power problems only popped up after the update to 1607

I found the cuprit Brink. It was a wallpaper app that I had set to cycle every 30 seconds. Shutting that down, W10 sleep works brilliantly. Apologies for thinking I was having the issue I had with XP, which was a brilliant OS overall in its day. Thanks for you input on this :)