Hi, I'm getting a message in Laserweb "THe gcode concurrency can not be greater

Hi, I’m getting a message in Laserweb “THe gcode concurrency can not be greater than 5”
I can’t see what figure is in there and can’t find any way to change it. Any suggestions?
THanks

Is the gcode generation thread set to 5?

I can’t see what it’s set to. The box is obscured.

You can drag that vertical partition. Not sure is this could be the issue

That’s it thanks. Very useful to know!