The best way to conserve power while gaming is to disable any applications that you don't need. You should look for any unnecessary services, apps, or processes that may be running in the background, as these can take up a lot of your laptop's power. Additionally, you can also disable any non-essential power settings such as Bluetooth, Wi-Fi, and automatic updates. Lastly, make sure your laptop's cooling system is working properly, as this can help conserve power.