Does scene loading improve performance?

Questions & Answers
1

So from what i understand…

Scene A has 100 objects.
When you walk into a certain area, Scene B is loaded along with its 100 objects.

Now ive heard this helps performance but im wondering how? If Scene A still exists with its 100 objects, and Scene B just loaded another 100 objects, how does it improve performance?

At the moment I have a 612 by 612 map with a lot of detail. The entire game will take place on it but now im wondering if i should go back to the drawing board and split the scenes up for performance.

Unless my understanding of it is wrong then please correct me.
Also any other performance tips other than Unitys general tips would be great!

2

Usually when you load scene B you throw away scene A objects. (You can load scene B additively into scene A, however.) If you are throwing away scene A when you load B, then you’ll have less objects, so performance might be higher.