Do you know how it messes up the particle order? you could try making a laser that is made in the messed up order so it can't be broken. Would that work?
Trust me, I know the basics of particle order, and how TPT changes it. I've closely observed all my broken lasers and their particle order was messed up each time I exited TPT.
the_new_powder99999, TPT's stamps only has a temporary memory for particle order (the thing that keeps breaking these kinds of lasers). When first stamped, a stamp keeps its particle order, but gets reset depending on where the particles are, after you exit TPT (or save, probably in this case). You built the laser in an order so it works, but now that TPT messed up the particle order, it doesn't work.
Suddenly after saving this, all my copies of the laser stopped working, It would be good if someone knew why this happened.
I don't even know what went wrong.
Temporarily unpublished this because of glitches.