I'm sure a similar question has been asked before, but I can't find it when searching.
So the problem is this: Whenever I do anything on the Mach3 computer, be it opening a document or inputting a new Gcode line in MDI, the steppers stutter or stall. They stutter regardless of kernel speed and feed rate, and at higher feed rates they lock up. When I leave it completely alone, it seems to do fine.
The computer is as follows:
Asus P5V-VM DH mainboard (VIA P4M890 chipset)
Core2 Duo E6300 (1.86 GHz)
On-board LPT port
On-board VGA or ATi Radeon X1300
I switched from the on-board VGA to the Radeon based on other posts, but it made no difference.
The signal goes through a KelingInc KL-DB25 opto-isolated breakout board and into PacSci 6410 microstepping drivers.
Any tips?