Interface does not refresh

Hi all!

Already found a lot of information by reading and learning here, but now I have a problem whereI didn’t find an answer until now.

I’m using my old, rooted, tablet (asus TF300T) as “wall panel”, but some widgets (don’t know how to call them) are refreshing automatically (for example, external temperature graph, battery level graph). Other devices (mobile, laptop) are refreshing without problems. Light buttons etc are refreshing without any problems on the tablet.

Does anyone know what the problem or solution can be?

Many thanks in advance!

Bas