Need set max_velocity low or hight for speed up?

hello

about max_velocity
need set max_velocity low or hight for speed up ?

i try

[printer]
kinematics: cartesian
max_velocity: 1000
max_accel: 4000

and print 120mm/s
look like slow speed

but set
[printer]
kinematics: cartesian
max_velocity: 300
max_accel: 4000

look like fast speed

what max_velocity can set value ?

thakyou

max_velocity in mm/s is the maximum speed Klipper allows the print-head to move. The higher the faster
max_accel in mm/s^2 is the maximum acceleration Klipper allows the print-head to move. The higher the faster.

The actual speed is determined by your slicer settings up to the above maxima.

Typically higher acceleration has a bigger impact than only the velocity setting. What can be achieved mainly depends on your printer’s mechanical capabilities and also the speed of your board / stepper settings

you can recommend max_velocity = 1000 or 300 ?

I do not know your printer or its capabilities. Therefore I cannot give you any reccomendation