using 2d colliders with 3d models (only 2 axis)

Questions & Answers
1

im working on a game in very similar to the space shooter demo, except my player has to dodge stuff and cant shoot. im wondering if i can use 2d colliders instead of the box and capsule colliders, i am however using 3d models and not sure if its bad to do.

also would my game perform better if i did do this?

2

There is nothing bad about using 2D colliders on 3D objects, but it is unclear if you will 1) get any benefits, or 2) have some unintended consequences. The characteristics of 2D colliders are a bit different from 3D colliders. I suggest you try it and see.