Searching for "Start Speed" setting

Thank you for updating your profile. When I first looked, and I suspect the same for @Hank based on his comments, I saw that this information identified you were still shopping. I see now we are talking about a Ruida controlled system.

Yes, the Ruida controllers use a ‘Start Speed’ setting to control cutting as described here:

This is not a setting for the LightBurn software. This is a setting in the controller itself. LightBurn does provide access to this setting along with other controller settings via the ‘Machine Settings’ window to present this information in an easier UI, but you can set this value directly from the controller without LightBurn being involved at all.