Time to look for alternatives.

I’m a GDFM. PEBKAC. Wrong Focus.

The LED array is updated building off prior array data.
Then remapped to show in the correct locations.
Repeat.

Updating the remapped data means I’m running updates based on the rotational offset instead of the original data.

Remap, show, demap, all is good.

Thank you to everybody for putting up with me. ^.^;