Deploying Qt application to Android device is very slow

I have two versions of Qt (5.15.2): the original one installed with Maintenance Tool and the manually compiled with debug information (-debug -separate-debug-info). Deployment process of my Android application with both of this frameworks takes a very long time.

Maybe the result for deployment with original Qt is more or less acceptable, but, honestly speaking, I’m not happy to wait androiddeployqt for a minute each run (original_qt.log):

Elapsed time: 01:03.

And it takes ages to deploy using Qt with debug symbols (compiled_qt.log):

Elapsed time: 10:18.

For deployment I use Linux computer with i7 (2017). By the way, on OS X with older i7 (2013) deployment process of the same application takes only 15-20 seconds. So, what could be the problem? Which component of a system is to blame for this?