diff --git a/extensions/inference-nitro-extension/package.json b/extensions/inference-nitro-extension/package.json
index 90984acef3..9379e194be 100644
--- a/extensions/inference-nitro-extension/package.json
+++ b/extensions/inference-nitro-extension/package.json
@@ -40,9 +40,7 @@
   "dependencies": {
     "@janhq/core": "file:../../core",
     "@rollup/plugin-replace": "^5.0.5",
-    "@types/os-utils": "^0.0.4",
     "fetch-retry": "^5.0.6",
-    "os-utils": "^0.0.14",
     "path-browserify": "^1.0.1",
     "rxjs": "^7.8.1",
     "tcp-port-used": "^1.0.2",
@@ -59,7 +57,6 @@
   "bundleDependencies": [
     "tcp-port-used",
     "fetch-retry",
-    "os-utils",
     "@janhq/core"
   ]
 }
diff --git a/extensions/inference-nitro-extension/src/index.ts b/extensions/inference-nitro-extension/src/index.ts
index ba3705fde6..735383a61e 100644
--- a/extensions/inference-nitro-extension/src/index.ts
+++ b/extensions/inference-nitro-extension/src/index.ts
@@ -86,11 +86,17 @@ export default class JanInferenceNitroExtension extends InferenceExtension {
       this.onMessageRequest(data)
     );
 
-    events.on(ModelEvent.OnModelInit, (model: Model) => this.onModelInit(model));
+    events.on(ModelEvent.OnModelInit, (model: Model) =>
+      this.onModelInit(model)
+    );
 
-    events.on(ModelEvent.OnModelStop, (model: Model) => this.onModelStop(model));
+    events.on(ModelEvent.OnModelStop, (model: Model) =>
+      this.onModelStop(model)
+    );
 
-    events.on(InferenceEvent.OnInferenceStopped, () => this.onInferenceStopped());
+    events.on(InferenceEvent.OnInferenceStopped, () =>
+      this.onInferenceStopped()
+    );
 
     // Attempt to fetch nvidia info
     await executeOnMain(NODE, "updateNvidiaInfo", {});
@@ -200,11 +206,11 @@ export default class JanInferenceNitroExtension extends InferenceExtension {
       if (!this._currentModel) return Promise.reject("No model loaded");
 
       requestInference(data.messages ?? [], this._currentModel).subscribe({
-        next: (_content) => {},
+        next: (_content: any) => {},
         complete: async () => {
           resolve(message);
         },
-        error: async (err) => {
+        error: async (err: any) => {
           reject(err);
         },
       });
@@ -245,7 +251,7 @@ export default class JanInferenceNitroExtension extends InferenceExtension {
       ...(data.model || {}),
     };
     requestInference(data.messages ?? [], model, this.controller).subscribe({
-      next: (content) => {
+      next: (content: any) => {
         const messageContent: ThreadContent = {
           type: ContentType.Text,
           text: {
@@ -262,7 +268,7 @@ export default class JanInferenceNitroExtension extends InferenceExtension {
           : MessageStatus.Error;
         events.emit(MessageEvent.OnMessageUpdate, message);
       },
-      error: async (err) => {
+      error: async (err: any) => {
         if (this.isCancelled || message.content.length) {
           message.status = MessageStatus.Stopped;
           events.emit(MessageEvent.OnMessageUpdate, message);
diff --git a/extensions/inference-nitro-extension/src/node/index.ts b/extensions/inference-nitro-extension/src/node/index.ts
index 3aef77afda..0a7a2e33e2 100644
--- a/extensions/inference-nitro-extension/src/node/index.ts
+++ b/extensions/inference-nitro-extension/src/node/index.ts
@@ -3,11 +3,12 @@ import path from "path";
 import { ChildProcessWithoutNullStreams, spawn } from "child_process";
 import tcpPortUsed from "tcp-port-used";
 import fetchRT from "fetch-retry";
-import osUtils from "os-utils";
 import { log, getJanDataFolderPath } from "@janhq/core/node";
 import { getNitroProcessInfo, updateNvidiaInfo } from "./nvidia";
 import { Model, InferenceEngine, ModelSettingParams } from "@janhq/core";
 import { executableNitroFile } from "./execute";
+import { physicalCpuCount } from "./utils";
+
 // Polyfill fetch with retry
 const fetchRetry = fetchRT(fetch);
 
@@ -121,9 +122,10 @@ async function runModel(
     currentSettings = {
       llama_model_path: currentModelFile,
       ...wrapper.model.settings,
-      // This is critical and requires real system information
-      cpu_threads: Math.max(1, Math.round(nitroResourceProbe.numCpuPhysicalCore / 2)),
+      // This is critical and requires real CPU physical core count (or performance core)
+      cpu_threads: Math.max(1, nitroResourceProbe.numCpuPhysicalCore),
     };
+    console.log(currentSettings);
     return runNitroAndLoadModel();
   }
 }
@@ -348,7 +350,7 @@ function spawnNitroProcess(): Promise<any> {
  */
 function getResourcesInfo(): Promise<ResourcesInfo> {
   return new Promise(async (resolve) => {
-    const cpu = await osUtils.cpuCount();
+    const cpu = await physicalCpuCount();
     log(`[NITRO]::CPU informations - ${cpu}`);
     const response: ResourcesInfo = {
       numCpuPhysicalCore: cpu,
diff --git a/extensions/inference-nitro-extension/src/node/utils.ts b/extensions/inference-nitro-extension/src/node/utils.ts
new file mode 100644
index 0000000000..c7ef2e9a65
--- /dev/null
+++ b/extensions/inference-nitro-extension/src/node/utils.ts
@@ -0,0 +1,56 @@
+import os from "os";
+import childProcess from "child_process";
+
+function exec(command: string): Promise<string> {
+  return new Promise((resolve, reject) => {
+    childProcess.exec(command, { encoding: "utf8" }, (error, stdout) => {
+      if (error) {
+        reject(error);
+      } else {
+        resolve(stdout);
+      }
+    });
+  });
+}
+
+let amount: number;
+const platform = os.platform();
+
+export async function physicalCpuCount(): Promise<number> {
+  return new Promise((resolve, reject) => {
+    if (platform === "linux") {
+      exec('lscpu -p | egrep -v "^#" | sort -u -t, -k 2,4 | wc -l')
+        .then((output) => {
+          amount = parseInt(output.trim(), 10);
+          resolve(amount);
+        })
+        .catch(reject);
+    } else if (platform === "darwin") {
+      exec("sysctl -n hw.physicalcpu_max")
+        .then((output) => {
+          amount = parseInt(output.trim(), 10);
+          resolve(amount);
+        })
+        .catch(reject);
+    } else if (platform === "win32") {
+      exec("WMIC CPU Get NumberOfCores")
+        .then((output) => {
+          amount = output
+            .split(os.EOL)
+            .map((line: string) => parseInt(line))
+            .filter((value: number) => !isNaN(value))
+            .reduce((sum: number, number: number) => sum + number, 1);
+          resolve(amount);
+        })
+        .catch(reject);
+    } else {
+      const cores = os.cpus().filter((cpu: any, index: number) => {
+        const hasHyperthreading = cpu.model.includes("Intel");
+        const isOdd = index % 2 === 1;
+        return !hasHyperthreading || isOdd;
+      });
+      amount = cores.length;
+      resolve(amount);
+    }
+  });
+}