diff --git a/scripts/generatePmTilesExtracts.ts b/scripts/generatePmTilesExtracts.ts
index 3d5dfa5366..99e1556bc4 100644
--- a/scripts/generatePmTilesExtracts.ts
+++ b/scripts/generatePmTilesExtracts.ts
@@ -75,13 +75,15 @@ class GeneratePmTilesExtracts extends Script {
             return
         }
         console.log("Target dir is:", this.targetDir)
-        const numberOfThreads = 1
+        const numberOfThreads = 512
         const generator = this.generateAll()
         let batch: Promise<void>[] = []
+        let done = 0
         do {
             batch = this.createBatch(generator, numberOfThreads)
             await Promise.all(batch)
-            console.log("Completed", numberOfThreads, "processes")
+            done += batch.length
+            console.log("Completed", numberOfThreads, "processes; finished: " + done)
         } while (batch.length > 0)
     }