I'm attaching a simple test app that exposes the issue, try running with QT_ACCESSIBILITY=0 - everything's fine, but make that QT_ACCESSIBILITY=1 and scrolling slows down significantly.
I'm attaching a simple test app that exposes the issue, try running with QT_ACCESSIBILITY=0 - everything's fine, but make that QT_ACCESSIBILITY=1 and scrolling slows down significantly.