Dear gentlemen, thank you for participating in the discussion of the topic.
I'll tell you why I asked a question about USB-3.
When I made the USB-2 gaming device shown in the picture above,
I managed to implement in it all the maximum parameters for this class.
The first 30 minute combat sortie (I play a serious simulator) showed an undoubted advantage over other players. The picture below, = S = Alex it's me.
Testing the gaming device showed that this result was obtained
due to the high polling frequency of the device (the higher the polling frequency, the smoother control, and therefore less speed loss, the main advantage in combat).
The polling frequency of my device is maximal for USB-2, based on the test program it is 1250 Hz.
Maybe it happened because I used a high-quality microcontroller XMega, with hardware support for USB, I do not know.
But not every gaming device has a similar parameter.
That's why I was interested in USB-3, because if I could double
parameter 1250 Hz, it would turn out not a device but a bomb.
I felt that the frequency of 1000 Hz for a HID was selected for a reason,
but I wanted to investigate the question on USB-3 and get an answer why it is impossible to change the parameter of interest to me.
And one more interesting fact about the made device USB-2:
Due to the fact that I used as sensors incremental
encoders, it was possible to realize auto-calibration and also the guidance system which has an accuracy of 0.0009 degrees, all this is not only my merit, my leader of this project is a very talented person.
Once again many thanks to all, with respect, Alex 54.