Laser work speeds

So I’m etching borosilicate glass with the laser. That’s all going good, subject of another post, and I’m experimenting with settings. I’ve tried 20mm/sec, 100mm/sec, 400mm/sec and now 1600mm/sec but I don’t think it’s really running 80 times faster than the first try… Something’s lying to me.

What would be slowing it down?

Does ist run with higher values not faster at all or only a little bit faster?

Seems a little faster

Is it maybe this problem from another discussion?

I just ran a graphic at 3200mm/min (sorry, I misread it, all the prev settings were in mm/min) Seems no difference in print quality. Going to try some runs at lower power now.