Wat. All but the cheapest crappiest mice have been using 1ms polling for the last decade. IIRC USB 3.0 is effectively 8kHz and doesn’t use polling which does make a difference for real-time video (webcam and capture card) latency and lip syncing.

But nobody cares about USB. A lot of applications do 10000 reads from your SSD in series (qd1) and that’s where latency matters. I agree that it should be on the order of 1us. And since most people only have one SSD, chipset latency is not that important.