I’m really trying to remember what I did, but I got steam playing ball with my NTFS drives without issue…
Both on steamdeck using an SD card formatted to NTFS, and on a manjaro/windows dual boot with an NTFS shared drive…
Genuinely don’t remember how I did it… I want to say something to do with symlinks…
I assume you’ve come across and tried this: https://github.com/ValveSoftware/Proton/wiki/Using-a-NTFS-disk-with-Linux-and-Windows
I’m sure people said similar to the French Resistance regarding the Nazis/Vichy government…