So, I was using LW4 last night, and making good progress,

So, I was using LW4 last night, and making good progress, but then something changed in the config, and now if I put 300 mm/s in the cut rate, and generate the file, the GCode has 1800! It is always a factor of 6. Is this because of a setting I messed up somewhere?

You must mean 18000 because LW always runs on mm/min. mm/s get converted in the background

It’s a factor of 60

Ariel, I see. I changed the feed units in the application settings page, and it behaves as I expected. Thanks for your help!