I’ve been messing around with a few things, and I have found no way to alter the render effects such as lens flares and screen smudging? I’ve tried going into the player blueprint, and changing the render settings there (which I couldn’t find the screen smudges there either) and nothing I altered made any difference?
Does anyone know how I can change these settings? Thanks 
Check the Post Process Volume in your level(or create it if you dont have one already and set it to Unbound to make it global)
Thankyou! Really helped me out! 