[Warren77]

This worked. My app was the latest update of Daily Horoscope.

Steps that worked for me:
1) fully charge PRIV, unplug
2) reboot once or twice letting the optimization process happen
3) settings -> battery - app that has drained the most is because of the optimization process
4) uninstall those apps
5) reboot to confirm that they were the problem app
6) clear cache if wish
7) reinstall app
8) reboot to confirm no more optimization

Thank you very much! Very appreciated, it worked for me and 1 of my faulty apps was Trivia Crack!

[megafan2000]

Thank you very much! Very appreciated, it worked for me and 1 of my faulty apps was Trivia Crack!

I don't use my PRIV any more as my daily but have you tried reinstalling Trivia Crack? For me it initially worked for Daily Horoscope but subsequent updates to Daily Horoscope brought back the optimization problem. Silly problem.

[Warren77]

Same thing for me, hoping a future update of Trivia Crack will fix it! I noticed also that Trivia Crack took an unusual long time to install.

[ToniCipriani]

I don't know what app was updated on mine, it started off with 2 optimizations after the weird system update out of nowhere, down to 1 after a month or two, and no more optimizations as of yesterday.

Was doing hardware repair work on my phone and had to power off and on multiple times, didn't get the message at all.

[dble.d]

I Uninstaller Zedge. That took care of the optimizing application 1 of 1

[plumpqueen]

I did a factory reset on my priv twice. The first one I download all the apps again and updated the built in android apps. When I restart my phone it optimize again and it took 20 bloody minutes to function, i tried most of suggestions here (Gsam, full charge, delete apps etc.) but wouldnt work on my device so I factory reset the phone again and installed all my previous apps including Zedge and did not update the built in apps (but I update the Youtube, Chrome and Google Maps) and leave alone the other apps and to my surprise it didnt optimize since then. Thank heavens.

[GP540]

solution :
1 plug in phone and charge to 100%
2 with plugged in do - > settings ->battery ->refresh.
3 unplug device then restart.
4 wait for device to boot
5 go to settings battery and check what apps have used battery since last charge.
6 delete non system app as its your issue ( remember to delete app data )
7 restart to test

[bkgobe]

Thanks for the tips . They took care of my issue.

[the_boon]

Just had the same issue. Uninstalled Zedge and the problem instantly went away. I found out by going into Settings -> Battery and saw it there

[wobus]

Amazing from this week the issue has gone away and I have had it for months

[onysi]

this has been happening to me for a year but have not paid attention to it until now, so i did some research and found you guys with the same issue. the app that was giving me the 20 minute load time was Jack'd. ugh.