Machine consistently pausing briefly, after 15-20min in to a job?

[JAZZCNC]

Sounds very much like PC related rather than machine. Make sure everything like Updates, Screen savers, Energy saving etc is turned off.
Have you installed any software lately that's trying to phone home.?

It's more likely be something silly like this than PSU going down but like been said could be anything so don't trust it and find it before using again.

[JAZZCNC]

Lucan07 your wrong about mach3 not needing much graphics power. Infact it's one of the main reasons people have trouble with mach3 when using PP or lower spec PC's. Just clicking in toolpath screen would lock mach up on some PC's with poor or low graphics. This Big area where mach4 as improved.
While External controllers do take lot of the work load off Mach3 it can and does still happen with them. Even the Cslabs do it albeit to much lesser degree.

Charlie While I think it's more PC related just for precautions sake I'd go over the wiring and check for lose connections or any nipped cables etc.

[lucan07]

Lucan07 your wrong about mach3 not needing much graphics power

Not what I said read post it does not need 32bit or High Res option to be pretty if your short on resources.

[JAZZCNC]

Not what I said read post it does not need 32bit or High Res option to be pretty if your short on resources.

Sorry it read like you ment M3 didn't need Graphics power which it really does but on reading again I see what you meant.! . . . My apology.