1) Request you to disconnect/reconnect the device or restart the mobile.

2) For offline videos, verify if video quality is causing the lag.

3) For online videos, check if streaming quality or internet speed is the issue.

4) For gaming, note that some latency is expected within the recommended range (which may vary by product).

This issue is mainly caused by Mobile Phones compatibility. Restarting the Mobile Phone will eliminate this issue as the Mobile RF will get stable