Nope, the main board is exactly the same base as the LEM12 Pro and the Prime 2.
The only differences between these models are the screens, battery management profiles and power control and some other minor things like speaker types and rear cover sensors.
There is almost no difference at all in the GPS design. All have the same internal antennas etc etc…
Have you used a good GPS test app and enabled ALL the correct permissions?
Android 10 has many different permissions compared to older Android versions.
For example, if you go to location in settings, you can enable Google location accuracy.
It helps a lot even if you have not signed in to Google.
