I'm going to test this with my project. If it fixes what I'm reading here in all the posts in this thread, you are going to appear in the credits of my project in really BIG capital letters, I swear it (and your name will be in a more important position than the Kadokawa Game staff too).
I will update this post once I've done with the tests.
P.S.: Also, if this can make a game run smooth without FPS drops or lag, I would like to suggest to our beloved staff members and developers to pin up this thread in the plugins forum, as a bug fix for those pisky bugs related with optimization.
UPDATE:
So, I've made a little test in my project, using two versions of the MV core (v1.5.1 and v1.4.1). The results are clear: this plugin fix, if not all, at least the majority of bugs related with optimization and stability with the Scenes.
With my project, it does not solve the sound delay issue, but I think it is less pronounced than normaly without any plugin. Also, the screen tearing in big maps is gone when working with both versions (v1.5.1 and v1.4.1), but... as I posted in
this thread months ago, there are persistent issues in v1.5.1 with the Change Tileset command if you use it continuously in a parallel process to make map animations. However, this issues are less pronounced with the help of this plugin too, and using it along with Yanfly's FPS Synch Option plugin helps a lot.
Something I would like to say, it's that FPS drops are present in both versions of the MV core, but the game runs smoothly in almost every moment and change of Scene, so they are not noticed unless you open the FPS window with F2 (and that, my friends, makes a big difference than before).
So, finally, we have a functional bug fix for this optimization issues with Scenes. I'll say even more: we have a functional bug fix for optimization issues with Scenes in RPG Maker MV made by a forum user, who has done much more than Kadokawa Games in all this years since the release of the program (and never figured out how to fix them).
I love you, man! You've made a great plugin, and I will give you a good position in my game credits, and I don't know how to thank you enough about this! Over and out!