There is nothing general in the docs, that would say: This is faster, because….
Qt 6 follows a general trend: Use more caching for the sake of speed. There were some optimisations in container classes and string views. We fixed a mem leak in the Quick pixmap cache.
The downside of more caching, in other words higher memory consumption, is that older memory constrained setups (mainly embedded) need to swap out and actually become slower.
But I guess that’s not a Qt specific phenomenon. All frameworks and other tools I use on a daily basis, have increased their appetite for memory as RAM becomes cheaper and larger.
