I had brought in a disk from another old PC of mine that was an NTFS formatted drive but no Windows on it. It worked OK for games. It seemed to work a lot better than what people complained about. I wonder if it was because there was no boot partition or any oddness with how NTFS works with hibernation on system partitions.

Permissions weren’t an issue because I just mounted the NTFS partitions with the user option.

I did eventually copy it over to a btrfs partition though for dedupe and snapshots like everything else.