Craig,
Amazing both did at the same time.
Regards,
Mauri.

Hi Mauri,
kool.

In this case it was the work that you put in to establish a suspected clash with the two operations that was critical.
Thereafter writing a little code is a small matter.

I seem to recall a quote from some scientist, it may have even been Einstein, that 'Science is 10% inspiration and 90%
perspiration'.

Craig

Hi,
The GPU heat issue:
Make all your Screen sets with the main screen so it is not displaying the Toolpath (make a tab display window or a button display window).
All PC's doing long cutting runs will overheat especially during the hot weather when continually displaying to the Toolpath.
This is worst with NVidia cards up to 100% GPU usage followed by No Video card 75% and lastly AMD 60% (all depends on file sizes).
All will soon after start running hot with the auto fan control cards eventually running the fans at 100%.
When not displaying the Toolpath then the GPU will be no more than 1% usage.

The crap image Toolpath issue:
After some more testing on three different machines with the CNC machines, I found that I could not see the forest for the trees.
The main reason for the 4 Axis Toolpath display issues are that All Axis must be set to Zero before loading the G-Code.
On 4 axis I and many others set the g-code Z point as the Centre of the Job, however Mach4 Toolpath wants to load the g-code with all Axis at Zero, so if your starting cut is set to say 50mm up and that is what you set the Z axis to in Mach4 and then load the g-code file, then it will display essentially a crap image.
Once the G-Code is loaded and displayed correctly, then set Z Axis to 50mm and run the code and all will display OK in the Toolpath.
If at any time you get a crap image then restart Mach4 and make sure the Axis are set to zero and then load the file.
Sorry for all the previous dialog above.
I hope this helps.
Regards,
Mauri.