No clue, about fps, but the 4k textures are only shadowmaps, not the actual textures so it's, in my opinion, useless.
I uploaded them just because i rendered them on that size and i know there's some maniac out there that loves useless things that make their pcs slower... xD
Anyway you can edit any of my mods as you wish, the only thing i pretend is that everything based off my mods must be released for everyone.
Diegorborges about my Valo fix: "Now all of you must have your slrr folder like this: C:/BIGBOSSisMYlordANDiamHISbitch/SLRR LOL"