I'd like to confirm that nds-bootstrap v0.48.0 fixes the issue!
All You have to do is set SWI_HALT_HOOK to false in the ini file, or just disable it in the game/app settings if You're using Twilight. This fixes the slowdown in Sonic Rush, Sonic Rush Adventure, and apparently some other games too, including Mario Kart DS.
This update actually came out 19 days ago and there even have been two newer versions since, so i'm kind of late with this, but figured i should give confirmation anyway.
Thanks for the help everyone!
All You have to do is set SWI_HALT_HOOK to false in the ini file, or just disable it in the game/app settings if You're using Twilight. This fixes the slowdown in Sonic Rush, Sonic Rush Adventure, and apparently some other games too, including Mario Kart DS.
This update actually came out 19 days ago and there even have been two newer versions since, so i'm kind of late with this, but figured i should give confirmation anyway.
Thanks for the help everyone!