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

JOY_NO_ACCEL_JUMP

CS:GO

This is a client only command that affects people who play with a joystick.

Syntax
joy_no_accel_jump [0 / 1]

Description

This is a client only command that affects people who play with a joystick.

Syntax And Arguments

joy_no_accel_jump [0 / 1]
0 / 1 Enter a 0 after this command to turn jump acceleration on with a joystick, and a 1 after the command to turn it off.