IntelliJ IDEA External File Changes Sync Slow: Causes & Solutions

IntelliJ IDEA's external file changes sync may be slow for several reasons. Some common causes include:

1. 'Large project size': If you're working with a large project with many files, syncing can take longer as IntelliJ IDEA needs to scan and process everything.
2. 'Network latency': Working on a remote machine or using a network-mounted file system can slow down syncing due to network latency.
3. 'File system performance': A slow or problematic file system can impact the syncing process.
4. 'IDE configuration': An unoptimized IntelliJ IDEA configuration, such as too many plugins or unnecessary features enabled, can affect syncing.

To improve the external file changes sync speed, try these solutions:

1. Exclude unnecessary files or directories from your project: Right-click on files or directories you don't need synced in the Project tool window and select 'Mark Directory as' > 'Excluded'.
2. Optimize your IDE configuration: Review your IntelliJ IDEA settings and disable unused plugins or features to improve overall performance.
3. Use a local file system: If possible, work with a local file system instead of a network-mounted file system to reduce network latency.
4. Increase IDE memory allocation: If you have enough memory, modify the '-Xmx' parameter in the 'idea.vmoptions' file to allocate more memory to IntelliJ IDEA.
5. Update IntelliJ IDEA: Make sure you're using the latest version of IntelliJ IDEA, as newer versions often include performance improvements and bug fixes.

If these solutions don't help, reach out to JetBrains support or post on the IntelliJ IDEA community forums for further assistance.