Rear Alignment - inside edge wearing out too fast

[carcar123454321]

When I purchased my 135i (2013, E88 convertible) from the previous owner, the inside edges of the rear tires had excessive wear. I bought new tires, had the car aligned, and again, about half way through the rear tires the inside edges are excessively worn.

The shop that aligned it said they were pretty close to stock specs, but because the springs were probably a little old, the camber was a little more than it should be. Since I drive "spirited" at times, I thought that should actually help, but not sure with squat under acceleration (toe?), the inside edge of the inner wheel perhaps getting worn in heavier cornering, etc.

Any thoughts on why this is happening and how to remedy?

[HP Autosport]

Post alignment specs. Stock doesn't mean it's good.