In your project settings, do you set vertical sync or a fixed 60 frames per second?
Through experimentation, I’ve found that on some mobile devices—especially underpowered ones—vertical sync squeezes out maximum performance and tries to stay around 60 frames per second, but if you fixe it to 60, the result is worse and there’s even stuttering.
That’s why I only enable the fixed mode for powerful devices with a high screen refresh rate of over 60 frames per second.
Here’s a code snippet containing the settings and a workaround to solve this. These settings have been tested on a large number of devices and are currently optimal for me.