Well, problems are where you find them. 
Another piece of the puzzle is acceleration, which my machine has at X=5000 mm/s² and Y=2000 mm/s², with an overall Idle acceleration of 1500 mm/s². If yours is significantly higher, crank it down to see if things improve.
The misalignment of the vertical text on the far right says it’s problem with lost motion, not spacing.
That controls the while-burning speed, not the between-shapes speed with the laser off where the controller’s curiously named Idle settings apply.
It is possible, although unlikely, that the X axis drive has a loose motor pulley. The ones in my OMTech are press-fit and highly unlikely to work loose:
But we have seen a hack-job direct from the OEM with a quarter-inch pulley on a 6 mm shaft sporting a loose clamp screw:
I’d expect that to also show up in the smaller motions, which is why it hasn’t come up yet, but take a look inside to verify everything is snugged in place.