diff --git a/scripts/generatePmTilesExtracts.ts b/scripts/generatePmTilesExtracts.ts
index 649451b01c..40d74831cd 100644
--- a/scripts/generatePmTilesExtracts.ts
+++ b/scripts/generatePmTilesExtracts.ts
@@ -16,7 +16,7 @@ class GeneratePmTilesExtracts extends Script {
     startProcess(script: string): Promise<void> {
         return new Promise((resolve, reject) => {
             const child = spawn("node", [script],
-                { stdio: "ignore", cwd: this.targetDir })
+                { stdio: "inherit", cwd: this.targetDir })
 
             child.on("close", (code) => {
                 if (code === 0) resolve()
@@ -75,7 +75,7 @@ class GeneratePmTilesExtracts extends Script {
             return
         }
         console.log("Target dir is:", this.targetDir)
-        const numberOfThreads = 512
+        const numberOfThreads = 1
         const generator = this.generateAll()
         let batch: Promise<void>[] = []
         do {