Add NTSYNC support (besides ESYNC and FSYNC) in Heroic Games Launcher to support new NTSYNC feature in Linux kernel 6.14

[MarkRijckenberg]

I suggest adding NTSYNC support (besides Esync and Fsync) in Heroic Games Launcher to support new NTSYNC feature in Linux kernel 6.14
See following sites for more details:
https://www.phoronix.com/news/Linux-6.14-Char-Misc-NTSYNC
https://www.phoronix.com/news/Wine-NTSYNC-Merge-Request
Linux kernel 6.14 should normally get released somewhere in March.
NTSYNC improves Wine / Steam Play (Proton) Windows gaming performance in GNU/Linux.

[shtirlic]

6.14 is released 2025-03-24

[Novantric]

Supported by default in Proton-GE 10.10, though idk if this is used by heroic. I think it seems to be.
Edit: It isn't, defaults to fsync or none when they're all disabled. Even using the Proton env var doesn't work.

[GamertechAU]

Need to ensure you enable the ntsync kernel module first. It's included in the kernel but most distros haven't enabled it by default yet as it's still experimental.

sudo modprobe ntsync will enable it for that boot.

[Novantric]

Thanks, that worked! I enabled it on boot by adding it to a config file in /etc/modules-load.d/.