its not actually “new”. Its an old emulator newly ported to Libretro which focused on performance. Platforms that are strugglling to run Mednafen NeoPop would benefit from using this instead, performance-wise
official core announcement: https://www.libretro.com/index.php/libretro-core-progress-report-december-31-2019/
Official Documentation: https://docs.libretro.com/library/race/
Github Page: https://github.com/libretro/RACE
Issues Page: https://github.com/libretro/RACE/issues