Originally Posted by
ger21
What kind of PC do you have? (Processor and speed)
And what version of Mach3?
Can you check two things?
1) Turn off the toolpath display and see if it still does it.
2) Open windows task manager, and tell me what the CPU usage is when it does it.
If it's OK with the toolpath off, or you find the CPU usage at 100%, It's a PC issue.
If it's a multiple core processor, I've had 2-3 users with a similar problem that fixed it with some bios changes. In the bios, disable C1E or EIST if you have them.
I've also had 2-3 users running older AMD processors, that just weren't capable of running the screenset, and needed a newer PC.