I write my experience to help people avoid the error we made.
In case you think to run your Raspberry 4 from a usb3 dongle, well, rethink about It. It’ll kill your GPS performance.
We went from a perfectly functioning f9p all day fixed to almost unusable Only going from an sd card to a dongle in usb3 Port (blu One).
Solution: Stick with your sd card or of you want to run your Raspberry 4 from a dongle, absolutely plug It in a usb2 Port (black one)