Pretty low, actually.
I tend to push the limits with “things”; find out how far I can go before it breaks/explodes, or no longer behaves as expected. I’ve been doing the same thing with the laser… “how much detail can I get/how crisp can I cut”, etc. That then establishes the normal working environment.
100W laser (adjusted to ~28ma at 100%) and I ran the following at 400/500mm/s and between 8 & 15% power.
Toilet paper is apparently like an ogre, and has layers.