AMD RX 6xxx Mining

Indeed, high memory is why your cards perform so well, more cores does not help much, you need at least 8 GB to efficiently mine C32. Probably having 16 GB boosts the efficiency even more.

I can only share my old RTX 2080Ti settings, undervolting and higher memory clock worked best for me. Again, it is all about the memory. You can read other settings in the blog below to get a feeling.