Pretty much this. Even not developing for switch, is it that bad wanting to achieve the best performance possible?
slope depth bias its the ideal way to solve the problem. Can this behaviour be implemented in the main branch? Can it be moved to a plugin? Are those files the only ones needed to implement the slope bias?
Denoise usually means way more expensive than the traditional solution.
Wow, the voxel solution in the video is beautiful. That thread was a year ago, and no news on this topic (T_T)
And by the way, shadow proxyes or shadows with lower LODs will be helpful on improving performance for sure.