Using Outlook for Android in business environments for email and scheduling
I am in the same boat. Turned it to "Unrestricted" and hoping this is a bandage until a more thorough fixed comes out in an update. I don't remember changing it ever so I don't know if a recent update made a change to the battery setting. However, it was on "Optimize" when I checked and I use Outlook regularly enough that it shouldn't be put "asleep" as the syncing is set to push. Will report back tomorrow.