Like I proposed here and if you have the time, it would be useful if you could build DACH area with desktop Cruiser and other options?
See my instructions at the announcement, just select “Flexible mode” and “Car” in “Graph options”.
It will take some time and because it’s a large region, if you have RAM can change Cruiser’s start script like mentioned.
So we can see if the graph creation mode plays a role in weaker phones.