I run a Hero 9 and 11, but this is what I use:
Stock lens: 4k, 30fps, linear w/ horizon leveling, high bitrate, low sharpening, flat color.
Max lens mod: 2.7k, wide, high bitrate, low sharpening, flat color.
I'm not sold on the max lens mod, I get weird glares with it, but it's nice to be...