Make roblox games lower resolution?

So I’m trying to make a game using roblox, and I kind of want to have a low resolution-like effect, if that is even possible. I’m kinda trying to get it to look like this:
I was wondering, is this even possible?
Ive looked around and I havent really seen anything like this, so I can’t figure out

ViewportFrames provide a lower resolution, but that also comes with performance instensive processes, no shadows, no physics and less Lighting and material effects.