Hi nazzzir,
Yes, using instances will speed your level up, even when the meshes don’t have collision.
It’s easy to convert your static mesh components into instances - I have an instance manager on the marketplace with a tutorial linked below - the same concept of converting the components in instances would work with any type of instance routines though so you don’t need my plugin:
I also have another tool on the marketplace called rdBPtools which can help build those blueprints (and optimize them).