Wouldn't it be nice if you could enter in the Outline, Solid Infill and Support Structure Underspeed as a number (mm/s) or just using up and down arrows
and have Simplify3D work out the percentage so we don't have to do the math.
I would be really handy to actually set the millimeters per second or see the millimeters per second next to the items you enter.
Maybe even have a option that you enter in speed as a percentage or as millimeters per second
In my option percentages are not always easy to work with when you don't see the result so you can double check your math is right.