It has been reported that the Performance in Track Mode does something like this. There is very little power drop-off running even very low SOC. What isn't know is how much damage this does to the battery causing longterm degradation of ability to store charge, which is the real constraint on doing that sort of thing.
Extraordinarily claims require extraordinary evidence. 3P drivers using Track Mode on a track all seem to want to keep their car at high SOC due to power loss.
First off, I said "reported" expressly for emphasis that "maybe it is true, maybe not".
Because it probably still matters some due to raw underlying limits of how much you current can pull out of the battery without frying it? Plus they are expecting that it matters, because it does the rest of the time and in every other variant?
"Technically" I'm suggesting what might be happening is exactly the same thing as @dave999z proposing. How else do you think it could happen? Power = Amp x Volt. If your Volt is lower because the SOC drops, and that is basically how SOC is measured, by comparing V to a designated standardized scale for the battery pack, then there's only one way to get the same Power out.
Wow, what's your problem? I was just summarizing, not correcting you. In fact, I wasn't even replying to you. Yes, what you were describing is the same thing. You clearly understand what would be required here, others may not.
Should I forward my address so you can have a P, equipped with a vbox and draggy, dropped off in my driveway?
It takes people time to get out and do at least semi-controlled tests in a good, safe environment.
