When I enter a world for few seconds everything is normal and then it goes blurry. I thought it was something to do with my laptop overheating so I let it cool but that did nothing. I was able to play for few hours normally and then this started. After Googling I found that this might be something called super secret setting, but with that, the GUI would be normal. If I go back to main menu then everything is normal again. What is causing this and how do I fix it?
I'm playing a Minecraft modpack called RLCraft 2.