Hello Jason,
Not sure what you mean going into non- montion with SAT feature off, but I'll share what little I know about the MX Sport all metal SAT.
I was under the impression SAT in all metal helps the MX Sport handle difference type's of mineralization, that's what I use it for. The tougher the soil the higher SAT I use, lower mineralization use lower SAT.
SAT effect's depth in all metal mode, be careful use only what you need. For instance, at a fresh water lake with tough Black Sand. I'll start off with a SAT of 3, this is using prospecting mode. Then, if the Sport stability isn't quite there will bump up SAT until it operates with good stability. Plus, you'll notice recovery is quicker but with some depth loss. Which in many cases is ok, because you'll gain back depth with having better stability and hear those tougher signals.
Inland farm hunting, depending on mineralization can get away with using SAT between 2 to 4 in prospecting mode, these are good SAT speeds allowing the MX Sport to Punch extremely deep yet have good stability. We are taking almost Pi depth using VLF technology coil for coil, but when soil gets tougher or thicker in iron area's bump up SAT a Little to increase recovery speed.
Prospecting mode is my favorite with the MX Sport, then Relic mode.
Good luck,
Paul