Hello there, justin101! As per your concern, there are so many possible reasons that you're experience lagging while playing Call of Duty Mobile. If you game a lot with your Android device and are experiencing lag during a gaming session, this is because of services and apps running in the background and eating up your device's memory. There are two ways you can optimize the memory device for a better gaming session. 😁 You may also check this link; https://www.samsung.com/nz/support/mobile-devices/my-phone-is-lagging-what-should-i-do/ Hope to have helped you. Be sure to click " ✓ Accept as Solution" when you find an answer that works for you. Stay safe and have a nice day ahead!