[Iffuw]

Hi Crackberry-Community.
Since recently i've been experiencing some issues with the notifications of the calendar and the tasks.
Both do remind me, but the notifications come several minutes late ( e.g. if I set a task remjnder to 1400, the notification comes at 1407 or even later).
Battery saving is deactivated and the "draw upon other App" is allowed for both.

Any suggestions what's the matter here?
Thanks in advance

PS: I'm using a DTEK50 with Android 6.0.1 SecPatch Nov '17