Screen timeout reverts back to 15 secs. Galaxy S8 Verizon

[sctiger]

I've set my screen timeout to 2 minutes. It will stay at that setting for a while. But, eventually it will revert back to 15 secs. I don't have any battery optimizer apps installed nor do I have any battery saving settings enabled. I'm using a Galaxy S8 on Verizon. Problem occurrs on both Nova and stock TouchWiz launchers. Thanks for the help

 

[Gdwheel]

Do you have a work or outside email account that forces security policies? Sometimes those policies change the screen timeout. If that is not it, I do not know what to tell you.