CurseForge · Minecraft mod
Sync Fix Core
Humm yes, sync fix core for sync fix to work with the newest version
Quick answer
Which Sync Fix Core release should I use?
Sync Fix Core syncfix-core-0.0.9-preview-1.jar targets 1.20.1 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is Sync Fix Core required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Sync Fix Core syncfix-core-0.0.9-preview-1.jar need?
syncfix-core-0.0.9-preview-1.jar. Change the file and its required mods may change too.
Install Sync Fix first. We found matching files for this game-version and loader setup. 5 come through another mod in the chain.
5 extra mods were pulled in by other dependencies. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Sync Fix Core without breaking your instance.
Built for Sync Fix Core syncfix-core-0.0.9-preview-1.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use syncfix-core-0.0.9-preview-1.jar. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Sync Fix first. We found matching files for this game-version and loader setup. 5 come through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside syncfix-core-0.0.9-preview-1.jar. It opens that exact file at the source.
About this project
What does Sync Fix Core add?
LATEST VERSION IS AN PREVIEW AND IT MAY NOT WORK
There is a discord server i made but for now i need to learn how to use better the ai to make this optimization mods have the most profesional development possible ,for now Re:loop its the only project im working on.
SyncCore is the core component of SyncFix that loads as a GameLibrary and performs two functions: Now in aternos
• It registers as a ModLauncher LaunchPlugin/TransformationService to inject ASM before the game starts.
• It patches two key server components:
◦
MinecraftServer.tick(BooleanSupplier) → adds calls to SyncFixMod.asmServerTickStart/End to accurately measure the duration of each tick.
◦
net.minecraft.world.ticks.LevelTicks → wraps the scheduled tick budget with SyncFixMod.asmComputeScheduledBudget, allowing scheduled ticks to be trimmed/adjusted when there is an overload.
• Additionally, it marks system properties (org.syncfix.asm.*) so the mod knows if the patches have been applied and maintains safeMode=false when the core is active. It doesn't optimize chunks or add its own mitigation logic; it only provides the ASM hooks that allow the mod (syncfix) to apply its governors and metrics. Patches are automatically injected at startup, so no user configuration is required. in future more improvements will be implemented
Project description from CurseForge.
Pick your setup
Sync Fix Core by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Sync Fix Core versions and loaders
syncfix-core-0.0.9-preview-1.jar
syncfix-core-0.0.9.jar
17 Apr 2026
syncfix-core-0.0.8.jar
9 Feb 2026
syncfix-core-0.0.7.jar
3 Feb 2026
syncfix-core-0.0.6.jar
30 Jan 2026
syncfix-core-0.0.5.jar
30 Jan 2026
syncfix-core-0.0.5.jar
26 Jan 2026
Looking for an older file? The official CurseForge project page is in Resources.