Ok, so ive been trying this for some time and while i did get the noise pixelated its very glitchy and constantly flickers. This is because world position and floor node dont go together well. Problem I have is that thats the primary component to the pixelation effect im trying to get. If theres any alternatives, let me know, but this is the only solution i know of.
For the time being i might just use default texture samples and add distance blending, vector noise, triplanar mapping, etc. to it so i also get a good result.