I have no out of memory messages found in my system.
But I still can imagine that there is a relation to the systeminfo binding:
After many restarts the binding did start without obvious side effects.
I have it uninstalled now and will see what will happen. But the uninstall of the binding also led to several restarts of OH, what I haven’t observed with any other binding since my first installation with OH (that was 1.8…).