aliased properties severely slow down document loading

Reproducer attached.

UntitledProject01\content\screen\Screen00.qml

is nothing more than a trivial wrapper around

UntitledProject01\content\subScreen\SubScreen00.qml

It does nothing but instantiate a default SubScreen00. All internal processes are commented out. However, opening SubScreen00.qml for editing takes ~5 seconds or so but the same costs quite a few minutes for Screen00.qml. QDS even freezes and stops responding meanwhile.

Reason: multiple import commands. If one comments out those imports (mainly QtQuick) then problem solved. But in real project, QtQuick is needed.
Or one can just edit the qml files in Qt Creator. The efficiency of Qt Creator is decent.

IIn short, QDS import scanning may need improvements.