Direct answer
Generating new chunks while players travel competes with region ticking, chunk worker threads and disk I/O. Folia officially recommends pregeneration before sizing the worker pool.
How to check it
- Define a realistic world border or exploration area and calculate the storage required before generating it.
- Back up the world and check that the world generator and pregeneration plugin support your precise Folia build.
- Record CPU load, free disk space and generation throughput on a staging server during a short test.
What to change
- Run a Folia-compatible pregenerator while player load is low; complete one world at a time, monitor disk capacity and avoid other heavy backups during generation.
- Stop gracefully, confirm region files and new chunks load correctly, then restore normal public access.
Software and version notes
Compatibility and safety
Do not copy a Paper-only pregeneration command or assume an unfamiliar plugin is thread-safe. A fully pregenerated world can still need chunk loading and I/O, especially when player locations shift.
Verify the result
Travel through pregenerated areas with multiple players and compare first-visit hitching, worker contention and storage growth.