New Redmi 4x Gps Don't Work With Lte

[Latenzo]

I guys i have a Redmi 4x International (with band 20). If i want to use GPS i must change the data connection from LTE to 3G because the GPS service don't start and using apps like Pokémon Go and Google Maps the GPS position is lagging and jump from a position ti another one.

I have the latest developer EU.
Please resolve it.

 

[Latenzo]

Any solution?