Hello everybody!

I have been using a model of FashCut 2000m since 2003.
During this period, there were minor problems, but they were solved by my own.
I used the driver box and the signal generator and software V1.61 for my home-made cnc machine. http://igor-jet.narod.ru/My_cnc.html

So I had to change the settings of electronics.

Now I use FashCut 2000m again.
I found the loss steps. I've tried to return all the settings that I've used before but it has not produced results. (In the picture below you can see my settings now)
I've lowered the current that goes to the stepper motors up to 1125mA. Skipping steps decreased, but all the same thing happens.
Help me to understand please. What is the width of the pulses should be chosen? And what the current is usually chosen in the driver box for 2A step motor?

My controller V 2.0.3 rev G
My driver box 500-080-111102
x-axis: 2035
y-axis: 2035
z-axis: 2035
a-axis: 2035