Do you have any sort of reset you can do to the packs to bypass the reduced supercharging speeds? I would be interested in you doing this to mine if you can. I travel a lot and supercharge a lot and the reduced supercharging speeds are painful.
Unfortunately the only thing that is kind of doable is to downgrade the entire vehicle to early 2019 firmware. Only really possible on MCU1, and even then you'll have to contend with some other issues related to being that far out of date.
Given the rationale behind the throttling and other changes, I don't do this for people nor to do I recommend it.
Best option for better supercharging speeds is to upgrade the battery pack to an unaffected version.
I'm launching a page soon where you can price and schedule upgrades at 057. Similar to the service plan page, punch in the last 6 of your VIN and get a list of options and estimated prices.