Plane Detection and QR Code decode at the same time

hi
i am planning an app where the user should decode QR codes posed on a plane.
when pressing a button the app should keep the standard AR plane while the QR decode library scans for any QR Codes.

i was thinking about reading the Camera Image and streaming it into QR decode library

any idea if there could be problems?
or should i switch from AR → QR decode → back to AR ?

@tdmowrer please could you give us an hint about this topic?

i found a similar thread TryGetLatestImage Performance