when I preview the game stuff like the character and such is blurry how can I fix this plz…
Could you probably give us some more informations. 
e.g
Is this happening with your stuff or the assets from epic games?
Your specs
Probalby a picture
Here you can find some solutions: https://answers.unrealengine/search.html?q=blurry&type=question&lang=en&sort=relevance 
well when I move the character around he has a blur like it’s underwater. did I mess up a setting somewhere. I can be in low or epic it does not matter…
Check your camera and post processing volumes; sounds like you’ve got motion blur turned way up.
hate to say but I don’t know where to check the camera out at. but it does act like I have the motion blur on, ty