I’m assuming this would help with crashes, most likely an access violation, however I just started my server and have no player base. I do know that it will speed up your server 10s of times as far as DB writes are concerned.
I’m using fstab to recreate my tmpfs on linux and custom scripts for backup/restore with a symbolic link to the Saves folder.
If you’re running a linux box, I could do a write up if you like.