First off. Is the UC100 a genuine one from cnc drive? There are fakes around.
Secondly which stepper motors are they?
What voltage psu and does it / they have the wattage to run all together at same time?
My psu's (*2), drivers & board are very close together with no issues on my X2 conversion.
However I am only using 36vdc and it isn't enough for my 425oz nema23 steppers.
I work in mm.
If I set acceleration above 120 it misses steps and can stall.
If I go above rapid velocity of 1300mm/min I get the same thing.
I should be running at least 48vdc because inductance is 3.5mh. This would increase performance.
I now have a bigger machine (PM25 size double the weight) with 566oz nema24 steppers 3mh inductance.
This time I am using 60vdc and my psu's, drivers, board again are tightly packed in the control box.
I can accelerate at 500+ and run a rapid velocity of 3000mm/min+ without any problem.
The higher voltage has bought everything to life.
Furthermore. My cables are not screened but I have no physical limit / home switches yet.