I make 2" tokens using version 1.7.08 and cutting goes well, The engraving always stops somewhere while engraving. The engraving is well within the circle, but will quit halfway through a word or skip a word entirely (see picture). It doesn’t matter what it says on the token it just stops. If I’m engraving something larger, say 4"X 5"+ it’s never an issue.
If the controller is connected to the PC with a USB cable, then “always stops somewhere while engraving” suggests a communication problem trashing the remainder of the job.
You can try upgrading the cable with a good-quality cable from a dependable source. Although ferrite cores may not solve the problem, they tend to be associated with better quality workmanship inside the cable.
However, if at all possible, connect to the controller through its Ethernet jack, as network communications tends to be much more reliable. The doc goes over the basics:
One possibility is that on larger jobs, the communication glitches chop out smaller pieces of the design with results that aren’t obvious and the rest of the job completes normally. Smaller jobs lose a proportionally larger chunk that’s painfully obvious.
Take a close look at those larger jobs for small defex you may not have noticed the first time around.