Should I use which file system for Proton and Wine prefixes on Lutris or Steam with an external SSD or microSD card under SteamOS ?

In the Bazzite documentation says “FAT32 and exFAT are unsupported . Both filesystems do not support symbolic links which is required for Proton prefixes to work properly. However, there are scenarios where a microSD card is formatted to exFAT may work in some cases, but this method is unsupported as something the Bazzite maintainers do not plan to accommodate.”