Unity: Subscenes
Split scenes into smaller sections that makes sense
Example:
Background-scene
Interaction-scene
Gameplay-scene
Player-scene
Master-scene loads all these other scenes
But this needs to fit with “Any scene should be testable” principle
References
Unite 2016 - Tools, Tricks and Technologies for Reaching Stutter Free 60 FPS in INSIDE:
https://www.youtube.com/watch?v=mQ2KTRn4BMI&t=0s