How to increase graphic quality

Problem: My world looks grainy, or perhaps even blurry. I have tried to build the lighting a few times (current pictures have light not built yet.) I believe I have the highest graphical settings on (lit, high settings, etc) but still does not look hd, or even close to it. This happens in both editor and standalone. I dont know if its my lighting placement, or some setting I may have off( or on). Any assistance would be highly appreciated

Note: I have both Directional and Skylight I have also tried to look for other answers on here, but most are different, and/or are not the problem. I also have my quality set to ‘Epic’

Idea: Is it something to do with the quality of the foliage?

like this

Or this…

Have you figured a way yet? I can’t find any solid answers on this and I’m stumped. I’m using 4K resolution and the output of it is horrible looking.