I have a Xiaomi 14 Ultra, the game is installed on internal storage, but I keep getting lag in battles, especially when there are lots of enemies. Video settings are on medium - does lowering the resolution help, or is it just the game's optimization that's the issue?
Genshin Impact on Android really does suffer from optimization issues - even powerful phones can lag during intense scenes, and the problem is more with the game itself than your device. Try lowering the resolution and disabling some effects like shadows and reflections; that usually helps avoid lag during fights, though it won't completely eliminate it.
Lowering the resolution will definitely help, but I'd first check if your phone is overheating during gameplay - when the processor starts throttling due to temperature, fps drops even on flagships. Try enabling performance mode in your system settings and closing background apps before fights, that often gives a noticeable boost. If nothing helps, you can try installing it on your memory card, though that usually slows down texture loading - with your Xiaomi 14 Ultra, that's probably not critical.
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