Make syncChunkWrites false by default

[Kichura]

What config to change

syncChunkWrites=true -> syncChunkWrites=false via the vanilla's options.txt file.

Why should it be changed

By default this feature causes region files to be opened in synchronous mode and is only enabled in Windows since 1.16 Pre-Release 3, However it has some unintended side effects such as causing world savings to become horribly slower than expected which is apparent in certain Linux distros when exiting minecraft servers using the stop command.

Additional details

While this doesn't really change anything in terms of optimizations (or might for some?), it does resolve some annoyances when dealing with backend lags in this case. However this is disabled by default on many servers such as PaperMC which is the reasoning why i thought of making this issue in first place.

[Madis0]

I'm confused. The wiki and your post says it is enabled by default only on Windows, but you mention that "world savings become horribly slower [...] in certain Linux distros [...]".

So what does Linux distro slowness have to do with Windows?

[Kichura]

I'm confused. The wiki and your post says it is enabled by default only on Windows, but you mention that "world savings become horribly slower [...] in certain Linux distros [...]".

So what does Linux distro slowness have to do with Windows?

This option is actually the default on vanilla servers [regardless of the OS] which means it's still bad to leave it enabled since managing region files in synchronous mode is absolute crap regardless of OS - pretty much should not be enabled at all in case any more performance loss happen.

[Madis0]

This option is actually the default on vanilla servers [regardless of the OS]

So... it is a server problem, if it is default enabled on there but not on all clients?

I feel like there is not really a reason for FO to touch it, considering Mojang did not add any UI option to touch it, and because FO has FastQuit anyway.

[Kichura]

This option is actually the default on vanilla servers [regardless of the OS]

So... it is a server problem, if it is default enabled on there but not on all clients?

I feel like there is not really a reason for FO to touch it, considering Mojang did not add any UI option to touch it, and because FO has FastQuit anyway.

FastQuit does not solve the problem when the value was set to true, therefore this is not an ideal workaround for that.