The Roborock Q5+ audibly struggles on medium-pile carpet like a car stuck in mud

You can hear the brush fighting for its life when the Q5+ hits anything taller than low-pile carpet. On low-pile or hard floors it’s perfectly happy. But if you’ve got that plush, sink-your-toes-in carpet, this is not your robot — it’ll do its best, and its best involves a lot of whirring without a lot of progress.