The shorter your machine the faster it can go, or deeper.
This is why I don’t put speeds or depth of cut anywhere. so many variables. I suggest always making test cuts. make a smal parts with all the right features and use it with every material change. I do it to make sure my bits are sharp. When they start to dull your dims will suffer, becuase eventually you will have to go too slow. There is such a thing.
Practice makes perfect….experience makes better parts? Need a slogan…that one didn’t work