There can be multiple reasons for this because PUBG Mobile have higher-quality graphics, and lots of animations. All these things can lag your phone while playing PUBG.
Follow the step-by-step instructions to Fix Lag in PUBG Mobile.
1. First, you will need to go to the settings of your mobile phone.
2. And then go to Additional Settings.
3. After that, navigate to Developer Option.
4. You have to enable Force 4x MSAA settings.
5. Set “Background Process Limit” to Standard limit.
6. After that, you need to free up space on Internal Storage & Clear System Cache.
7. And then enable the Game Turbo.
8. Now you will need to add the game to Enable Game turbo for PUBG.
9. After that, enable “Home screen shortcut”.
10. Now you have to reboot the mobile.
