Exactly the same issue, I'm from Italy.
I have tryed to reinstall windows and manually update drivers and firmware on a Surface pro 7 (128GB storage, i5, 8GB ram), but this and other problems weren't solved.
Apart from the pen pressure problem, I noticed a periodic freeze of 1 sec of the entire Surface every 2-3 min, and other software issues. Especially, if I tryed to convert the pen input to text in any program (as Onenote, settings, microsoft edge, etc.)
they crashed instantly.
I texted the italian Microsoft support about these issues, and they told me directly to "contact the dealer and ask for a refound" because "the Surface pro 7 generally has hardware problems".
Good job Microsoft.
I have returned the Surface, it is better to wait some months to see if in the future these problems will be solved by software or hardware fixes.