Transitioning to Maintenance
Parallel Luau was a solid addition for boosting native computation through multi-threading. However, Roblox’s philosophy as a “simulation engine” prioritizes determinism and consistency; whereas, parallelism opposes that by introducing complexities such as nondeterminism, race conditions, and/or replication issues. The limitations and overhead in Parallel Luau effectively often outweigh the benefits for most use cases.
With that being said, Parallelizer is now moving into the Maintenance Phase. It will remain supported with bug fixes, but will no longer be receiving further feature additions until further notice regarding parallelism in Roblox.