I started working on a new project yesterday and at first everything was fine, when I clicked play the game would display fine. I left it unattended for a while and when I came back a message had popped up saying that my framerate had dropped and the quality was going to be lowered. Now when I click play everything is more pixelated and blurry, does anyone know how I can fix this??
At the top of the viewport you can find the quick settings -> there you can also find the quality settings (set them to epic) 
yeah ^this but when u have FPS problems in the editor. I usually just put it on Auto (so it detects the best setting). Only when i am showcasing or i need to render, i turn it up to epic quality.
But then again depends on your rig your working on 