Script: https://gist.github.com/pnlmon/9a44e8fd9a13bd2f2dee9eaf55aec178

This is a quick way to find out all the id’s frequency in your game.

Why you would want to remove less used asset

Each asset, even if their content is the same, if they uses a different id, will be loaded separately, stored separately, and importantly, not batched when rendering (for mesh).

This means that if you have a lot of assets that are not used often, you are wasting memory and performance.

You should always try to batch your assets as much as possible, and this script is a good way to find out which assets are not used often.