There is a mod for the DSi/3DS called “Twilight Menu” and it allows DS games to use the DSi’s better clock speeds. Given that overclocking is a common feature for emulators, I was wondering if there were any DS emulators with this feature. I have seen discussions on other websites about this topic and how it would be possible but none of the emulators are listed as having an overclocking feature. All of the documentation and discussions about this seem to be at least a few years old and I know a lot can happen in a few years.
I’m not sure about HG/SS or WolveSlayer but all four of the gen 5 Pokemon games are DSi enhanced so they get a performance boost even without a modded DSi. I’d try other games but if the emulator is lagging on everything I have then I don’t know if I’d be able to. I know other emulators, like DraStic, actually run significantly better, even on older devices, but I don’t know if they automatically use the DSi’s clock speed or at least have the option to.