Are any of your other preferences blocked— I can see that pane is not active(?)
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Set sleep and wake times for your Mac - Apple Support
Try a SafeBoot https://support.apple.com/en-us/HT201262
Takes noticeable longer to get to the login screen, does a 5-15 minute disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache, etc. Login and test. Reboot and test will take a little longer as caches get rebuilt.
This test will tell you if third party interference; extensions etc are not loaded in safe boot mode.
To get a good look at your System config. for conflicts or issues, you can run this trusted utility http://etrecheck.com
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