So I'm still using Godot 3 for my project. The reason for this is because I gave Godot 4 a try like a year ago, and I remember it was very laggy and slow, and it also crashed a lot. Not sure if my PC is the problem, but judging how it has a very decent setup and how many people have also complained about Godot 4 performance, I doubt that's the case. It's been a while since I last used 4, so I'm unsure if these problems still persist.
So, what can be done to improve Godot 4 performance? And can Godot 4 new features be somehow used in older(or maybe alternate) versions?