"Extra quality" begins with the physical medium. Standard microSD cards often bottleneck the emulated system's read/write speeds compared to the internal eMMC.
By default, EmuMMC creates a separate Nintendo folder for your installed games. If you aren't careful, this can lead to fragmentation or path issues. To ensure the "extra quality" of your file system, you want to ensure your configuration points correctly to avoid data corruption. emummcini extra quality
Games crash after sleep mode.