Thank you Master driver dude Mr.Victory!!! You have earned your name on here big time. Installed driver, reboot and now running 2880x1800 and it’s blazing. Anything that had to do with screen redraw has been brought up to original Mac feel when they actually supported this thing.
Anyone thinking about repurposing a Macbook Pro mid 2012 10.1 please download Garuda Arch, install this driver (after initial install choosing open source driver option), and go. I’ve also found a fix for the 2 finger pinch zoom we all are used to coming from mac trackpads and will put that in an additional post. I found nothing on the interweb that solved this previously.
Again, the Linux community is full of amazing humans helping humans. Exactly what the interweb was supposed to be for. Goodbye after 35 years to a “jailed garden” of forced upgrades. \m/