o3de/Registry/settings.assetprocessorbatch.setreg

{
    // This file is only loaded by the AssetProcessorBatch executable.
    "Amazon": {
        "AssetProcessor": {
            "Settings": {
                "Jobs": {
                    // maxJobs 0 means use an automatic amount of CPU cores, detected from hardware.
                    "maxJobs" : 0,  

                    // AlwaysUseMaxJobs: true means always use maxJobs CPUs at all time.
                    // The default behavior for AP is to reserve half CPUs for background work
                    // and half CPUs for escalated (user requested) and critical work.
                    // Batch is usually used in CLI or automated builds,  so no need.
                    "AlwaysUseMaxJobs": true
                }
            }
        }
    }
}