Drastic.Not sure if this is the right spot for this question, but what's the best DS emulator to run through Retroarch on an Nvidia Shield?
Which isn't through Retroarch, it's standalone. Drastic's good enough that there's people who'll run an Android emulator on their desktop just to use Drastic to emulate their DS collection.
On my PC, I use all of the DS cores available depending on the game; I'd assume that depending on the game, you're not going to want to stick to just one core over the other.