Placenote using front facing camera

Hey team.
I am trying to use front facing camera with placenote, by coding

let configuration = ARFaceTrackingConfiguration
configuration.isWorldTrackingEnabled = true

instead of

let configuration = ARWorldTracingConfiguration

It did work, however i have found two differences in behavior.
1.point cload seems to be generated signicantly slowly and also will be deleted very constantly compared to the situation using back facing camera
2.The size of the map when uploaded seems to be very big

is there a way to fix these problems?