Now that I am home from traveling again, I can give some focus to the printing, and the layer shifting it has been doing. Currently, my working theory is overheating in the y-axis motor – I believe I am just pushing it too hard and/or it is aging. So my current option is to slow down the prints, reducing the travel speeds by 33% from 3000mm/s to 2000mm/s. Of course, this makes the print time go up by a similar amount.
Fortunately, the current models are not that long either way, only a couple of hours, so it isn’t that painful – especially with a successful print.
Thus far, I have reprinted the wooden floor tile twice, both times successfully with the slower speed. This is in comparison to the previous 3 failures on the same file.
Fingers crossed the printer plays nice going forward.