2d Platformer Tutorial: only 7-20fps when testing

So, I am not sure what causes this, but even the very basic tutorial is running in an almost unplayable state in the editor. Bad enough that I don't see it being a viable testing tool at all at a later stage.

My first thought was that it does not seem to use my dedicated GPU at all (and as far as I know a 5950X does not have an on board GPU either). The stat panel only shows the CPU and obviously it is struggling hard.

Task manager shows my GPU (2080ti) getting SOME use tho. Around 5-15% maybe. So is there something I am missing, or is the editor really THAT slow for testing the game? I don't feel like I can make the tutorial level with that lag, I need to hit jumps and that is not as easy with 7 fps as you would expect.