Older builds would freeze when loading certain alt costumes (notably Waluigi over Luigi). The 2021 fix rewrote the costume ID mappings.
Search for "Project M EX Remix v1.1 Fixed 2021.7z" on community archives like: super smash bros project m ex remix download fixed 2021
The file size is typically ~1.8 GB compressed, expanding to ~5.2 GB on SD card or virtual SD. Older builds would freeze when loading certain alt
Download Project M Ex Remix (Fixed 2021): The file size is typically ~1
Installation Steps: