The framerate in the RyujiNX emulator has improved and you can test it for yourself by downloading the latest build on their website. All games that currently boot or work on RyujiNX all have a boost of speed compared to earlier builds, including Super Mario Odyssey. You can now boot to the menu in under 5 minutes, rather than the previous 12-20 minutes to reach it. It's gone from around 0.3FPS to 6-7FPS in the latest build. Nice job, RyujiNX team.
Download - https://ryujinx.org/#/Build
Download - https://ryujinx.org/#/Build