How do I change the Unreal Editor resolution?

I’ve been working on a project for some time now but recently changed my set up, going from a 1440p monitor, to my 4k TV. When I load my project everything is super blurry and basically impossible to work on, as if its playing on the old resolution but cannot find an answer online for changing the Editor camera resolution.

Picture might not display it well enough as its being shrunk down.

Read this:

You can do it using blueprints too: