@Corjan-Meijerink Not your fault as this does appear to be an Android specific issue. The difference is very obvious when you put the 2 systems running next to each other.
I am sure HERE will help. May be worth reaching out to Google as well as I read a number of reports that suggested Google may be aware of GPS-specific bugs. That said, I have not had any experience of Google from a dev perspective.
Nonetheless, the app is superb and, for me, I am still using the app for my travels.