diff --git a/wasm_parts/main.go b/wasm_parts/main.go
index cfed83c4..0a62032e 100644
--- a/wasm_parts/main.go
+++ b/wasm_parts/main.go
@@ -112,7 +112,7 @@ var eng *promql.Engine = nil
 var engC = 0
 
 func getEng() *promql.Engine {
-	if eng == nil || engC >= 5 {
+	if eng == nil || engC > 5 {
 		eng = promql.NewEngine(promql.EngineOpts{
 			Logger:                   TestLogger{},
 			MaxSamples:               100000,
diff --git a/wasm_parts/main.js b/wasm_parts/main.js
index ec61a2fa..75b789fb 100644
--- a/wasm_parts/main.js
+++ b/wasm_parts/main.js
@@ -8,28 +8,31 @@ class WasmError extends Error {}
 module.exports.WasmError = WasmError
 
 let counter = 0
-var go = new Go();
 
 const getWasm = (() => {
-  let wasm = null;
-  let cnt = 0;
-  let run = false;
+  const _Go = Go
+  var go = new _Go();
+  let wasm = null
+  let cnt = 0
+  let run = false
   async function init () {
-    run = true;
+    go = new _Go();
+    run = true
     const _wasm = await WebAssembly.instantiate(
-        gunzipSync(fs.readFileSync(WASM_URL)), go.importObject)
+      gunzipSync(fs.readFileSync(WASM_URL)), go.importObject)
     go.run(_wasm.instance)
     wasm = _wasm.instance
     cnt = 0
-    run = false;
+    run = false
   }
-  init();
+  init()
   return () => {
-      if (cnt > 5 && !run){
-        init();
-      }
-      return wasm
+    if (cnt >= 20 && !run) {
+      init()
     }
+    cnt++
+    return wasm
+  }
 })()
 
 const newId = () => {
diff --git a/wasm_parts/main.wasm.gz b/wasm_parts/main.wasm.gz
index 8a67265e..cf02a026 100644
Binary files a/wasm_parts/main.wasm.gz and b/wasm_parts/main.wasm.gz differ