Is there a limit to the number of high-speed transmissions?

Is there a limit to the number of high-speed gear shifts? There is no limit to the number of speed changes, but there is a limit to the speed. Speed limit signs can be seen everywhere on the expressway, with the maximum speed limit of 120km/ h and the minimum speed limit of 90km/h. As long as the speed is within 10% of the specified speed, no points will be deducted.

Changing speed at will will easily affect others, so for the sake of driving safety, it is better to keep the speed steady.