NB! It seems this console command is not compatible with CS2.
Command Profile

JOY_ACCELMAX

CS:GO

This command sets the max acceleration of your joystick, if you use one to play CS:GO.

Syntax
joy_accelmax [Acceleration]

Description

This command sets the max acceleration of your joystick, if you use one to play CS:GO.

Syntax And Arguments

joy_accelmax [Acceleration]
Acceleration The max acceleration you want to use. The default value for this command is 1, and the higher the number the enter, the greater your max acceleration.