Stepper motors stall

Have you adjusted the Motor Current on the driver board?
Have you reduced the acceleration and speed settings in the ini file?

As usual it says TB6600 but something else is used, strangely with only one line of pins while the usual TB6560 and TB6600 use two lines of pins. Not important.
So, did you set the current to a reasonable value, where reasonable would be up to 2.5A on the drive for 2A motors while checking the motor temperature after 5, 10 and 15 minutes of use >if you can keep your hand on them all is good >if they peel the skin off your fingers = to much current.
Either way you look at it, anything over 150 to 200 RPM is pretty much unusable for stepper motors at 24V.
Low induction motors help, but not easy to find. Using higher supply Voltage helps but not safe with those drives, i would not push it over 28V.
The important thing from all of this for you is:
-there is a small potentiometer on the power supply, usually green in color and accessible without opening the power supply near the terminals, use a small screwdriver to raise the voltage to 27 or 28V, that will give you some more speed and some more torque at lover speeds.
 

Steppers are allowed to be really quite hot. Hot enough to burn you is, in many cases, still OK. tommylight wasn't joking about that.