2.) Optimize the graphics settings as per your device specifications.
One of the most effective ways to eliminate lag in Genshin Impact is to optimize the in-game graphics settings. The visual quality of Genshin Impact can be traded for improved performance. The first thing you should do is set the frame rate to 60. Apart from that, you can fix the lag by lowering the shadow quality and render resolution.
However, we recommend that you keep the render resolution at high and the remainder settings at low or medium. When testing the game on a Redmi Note 10 running Genshin Impact mobile, we tried several graphics settings and found that decreasing the details reduces the number of frames per second. So, feel free to fiddle with the settings and choose the finest in-game options for your device.
3.) Scan and remove viruses.
Scan your device for viruses and remove if there are any that are found.
4.) Close apps running in the background.
While playing Genshin Impact, background apps such as the Chrome browser and others can cause slowdown. Before you begin playing the game, make sure any useless apps are closed. Furthermore, we recommend that you go to the application manager and disable some of the apps that are consuming your device's resources, such as Facebook, WhatsApp, and others. You can continue the suspended apps once you've finished playing Genshin Impact. Note: When you close an app through the application manager, all alerts from that app will be turned off. So, only use this way if you're comfortable with it.
5.) Don’t play when the device is overheated or running low on battery
Long-term gaming might cause your mobile device to overheat, causing the game to slow. Also, a phone with a low battery will not be able to deliver the greatest performance in any game. So, keep your smartphone cool and charged so that you can enjoy the game without any issues.
6) Disable Battery Saver:
Battery savers are made in such a way that limits the mobile device's performance in order to extend the battery's life. You should not turn on the battery saver if you only want the battery to last 5 minutes longer than usual. The battery saver will just limit the mobile's performance to a fraction of what it is capable of. When gaming, avoid your use of the battery saver.
7) For Increasing FPS, fixing lag and stutter on all Mobile Devices
Install this custom made config file by me to fix all your performance issues such as lag, stutter, and low FPS.
What low end Mobile Config file do ?
Set game graphics lower than what is available in-game.