Public RC - 1.7.00 - Layer settings not sticking?

What have you set your defaults to? If that switch is enabled it means that the cut settings reset to whatever defaults you specified. If you’ve never told it what to use, it’ll use our defaults (100mm/sec, 20% power). If you want to provide your own defaults, go into the Cut Settings Edit window and click ‘Make Default’ or ‘Make Default for All’ at the bottom.

If you turn the “use default on new / startup” toggle to OFF then it uses whatever the last settings on the layer were.