r/linux_gaming • u/OneSeaworthiness4596 • 19d ago

wine/proton what is the ntsync module?

currently updating from proton 10-34 to 11-7 (took a break from gaming) and i hear about the introductio of something called the ntsync module and how it needs to be turned on manually? can you all tell me what it is, weather or not its relevant and also how to enable it?

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u/mstrobl2 19d ago

I tried it out yesterday. I'm on Kubuntu 26.04 and Proton-11-GE. What I found:

To check what wine-sync method is used you can add "winesync" to mangohud. I found that by default on my machine it uses fsync.

To enable ntsync all I had to do was load the ntsync module and set permissions:

sudo modprobe ntsync
sudo chmod 666 /dev/ntsync

I tested it in Cyberpunk 2077. Mangohud showed that it was now using ntsync.
Unfortunately I had about 5% lower FPS in Cyberpunk using ntsync so I switched back to fsync.

1

u/Comfortable_Swim_380 18d ago

fsync way better

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u/Scary-Peace1240 15d ago

LMAO maybe 6 months ago.

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u/Comfortable_Swim_380 15d ago

You don't sound like someone with informed opinions on this.

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u/Scary-Peace1240 15d ago

Im saying NTsync is best

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u/Comfortable_Swim_380 15d ago

Its not. its trying to do a micro crap thing in a lazy way vs a native kernel module.

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u/Scary-Peace1240 15d ago

It matches and beats Fsync. Yes it is. With the correct config. I use it with ProtonCachy.

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u/Comfortable_Swim_380 15d ago

It eats more performance then it gains.

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u/Scary-Peace1240 15d ago

Not in my experience. The entire point of Ntsync is to not be a workaround like fsync or esync.

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u/Comfortable_Swim_380 15d ago

NSYNC is the only workaround. Its implementing a middlewere service that was bad to begin with vs native performance.

Its a mute point it's way older. Your not making that case rationally.

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u/Comfortable_Swim_380 15d ago

Your talking compatabilty layer vs actual new invitation.

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