I love me EEO Elves regardless of the age of the mod they are great
But I also like my CBBE Bodies!  after some fiddling around I managed to get the High Res EEO Texture files to work in CBBE Texblend program AND bam
amazing seamless elves!

NOTE: THESE ARE FOR CBBE and EEO HIGH RES *i think 4K* Body/face options   YOU NEED BOTH FILES BELOW installed first overwrite with this or in MO put this after EEO file on your left list

download and install them as per their instructions, don't forget EEO Patch files for dawnguard!
CBBE
Ethereal Elven Overhaul


p.s the file has only female textures for EEO there are no male as they dont have a seam to fix
p.s i am using realvision enb with COT and ROL your character may not look like mine but there wont be any seams!