On my S10 (Android 10 but it was the same on Pie as well) when I set up any type of reminder (no matter if it done via Google assistand or Bixby) it does not alert at all or in some rare cases I got an alert several minutes (10-30) later about the event. The behaviour is not consistent at all in most of the cases simply nothing happens when the time for the reminder is reached. I spent lot of time debugging this this is what I found out so far:
I'm not sure if the 2 are realted but I also have issues with installing app from the Play Store. It takes forever. Usually it stops after reaching 100% in download and then nothing happens. After a while (several minutes) the install finishes. In Safe mode everything works fine!
Is there anybody experiencing the same? Any hints how to solve it?
I think I discovered the issue.
Battery and device care ->
three dots top right ->
Disable scan for malware.
This improved the play store install speed for me.
Let me know if you found this useful.