Hi dazp1976 -

It changes the speed and feed rate according to the size of cutter, depth of cut, material being cut.

If the software was that flawed, no one would use it.. Its widely used in the hobby sector

As i have been using an inverted router table for many years, experience of size of cutter and depth of cut and feed rate is reasonably straight forward - but it does in fact calculate these elements. I will of course check the parameters prior to making any cut.

I presume you always use upcut cutters for rapid clearing of bits as oppose to normal routing.

I always buy good quality cutters and blades and even crap machines can be transformed by using good blades and cutters