Lagging issues low framerate

Hi, I made an android game. It sometimes lags. Like framerate drops very low. Even sometimes when I run the preview on PC with debugger and profiling on, it lags. How to find what is causing the issue.

There may be some events that you don’t need but still running for example, when showing something, you just need to show it once and it doesn’t hide so you can use trigger once.

Have you looked at these links :

How to debug poor game performance


This draft Optimisation document