Just tested on my mobile - works absolutely fine, no lag. Google Pixel 6.
The problem with mobile is there are so many different types with an array on different hardware. Newer phones will run most C3 projects absolutely fine, older devices with dated hardware will struggle, even on simple games.
You could try adding a low resolution button, click to alter graphics to a lesser quality and/or disable behaviours/effects to help reduce memory usage on lower end devices.
Here is an example from my game - by disabling a few bullet behaviours for the fog, shadows and weather effects, some high resource levels go from 40 FPS to 60 FPS on my remdi note 9. On my pixel 6, no need to click the button as it all runs fine.