Stretching the ortho-camera output by 1.5x?

Hey y’all, I’ve started work on a 2D top-down game using the ortho-camera. I’ve got it set up so it’s looking down at the player at a 45° angle so the perpendicular player and ground look like they’re on the same plane. But obviously that also makes everything look a bit squished, if I were to stretch the camera output vertically by 1.5x it would make everything have the correct proportions but I can’t for the life of me figure out how to do it

I’ve tried messing with the aspect ratio but then that just changes the actual view window which is obviously not what I’m trying to do

I’ve only ever seen one person discuss this and they were told to stretch every texture by 1.5x vertically instead, but that would kinda mess with every vector and make projectiles a nightmare, so I’m also trying to not do that

Here’s what I’m trying to do:

Any and all help is appreciated, thanks y’all