Rename the EnjoyCJBC.ini file to EnjoyCJBC_backup.ini . This allows you to restore the game if you get banned or lag.
Open ZArchiver and navigate to: Android/data/com.pubg.imobile/files/UE4Game/ShadowTrackerExtra/ShadowTrackerExtra/Saved/SaveGames . Bgmi 90 Fps Config File Download
Which would you prefer?