No idea what they are now, and may have been changed. But the tool library I left in it, was done by calculating the chipload for each of our stock bits. There is one, and only one correct F&S ratio for any given bit/cut depth, and that’s the one that runs at the correct chipload for the bit. Any other speed, is either damaging the work, or damaging the bit. Physics is physics.
Every CNC router user should know how to calculate the chipload/F&S for a given bit, bring in their own (sharp) bits, and the tune the F&S to reflect the type of wood, and depth of cut/finish desired. The formulas are well known, and simple arithmetic. If you’re getting crappy results, accept it as a learning experience - it means you suck, so read more, ask more questions, and soon you’ll be whacking out the sweet stuff.
When I was maintaining the machine, we threw away an awful lot of bits, ruined by people slowing them down, causing them to overheat, lose temper, and stop cutting. The process of evacuating chips from the bit, is the primary means heat is removed, and when you stop making chips, and start making dust (because slow), you’re ruining a bit, sure as shooting.
Easy check - cut three or four inches with the bit at your proposed speed in the spoil somewhere. Look at the sawdust - is it dusty or glazed, or blackened? You were too slow. Is it the texture of meal? Hey - good job operator. Is the bit hot? If it is, you were running too slow, and possibly ruined the bit. Calculate the chipload F&S, and use that. Notice the bit cuts faster and cleaner, and isn’t hot at all? That what happens at chipload.