[BarcodeScanner] CameraX poor performance vs Camera1

Hi all,

First, thank you for the great sample app, it really accelerates learning.

I was running the sample app with the barcode scanner, and I noticed that the LivePreviewActivity has a much better performance than the CameraXLivePreviewActivity. I'm interested on implementing a similar barcode scanning approach, and I'm concerned about using the CameraX library, given the poor performance. Here are a couple screenshots from a Samsung Galaxy S8 running both activities against the same image.

What's the reason behind the performance difference? Is it a bug in the sample app or is it a performance gap between Camera1 and CameraX libraries?

Thank you,
Jorge