Great video comparing the built-in Godot physics to the Godot-Box2D and Godot-Rapier2D extensions.

If you've ever played around with 2D physics you'd know that Godot's implementation is... Really lacking and jittery. The two extensions are still relatively new so they're not as feature complete, but they're already a huge improvement. Cheers to https://appsinacup.com/ for creating both extensions.

See also the article: https://appsinacup.com/godot-physics-vs-box2d-vs-rapier2d/