I dont have Overwolf installed afaik (its not in my apps list under windows, programs), and Ambient occlusion is off (on doesnt do anything to them). The portraits arent washed out or faded (ive seen those while googling), but parts of the portrait (face and hair on Lohse) is completely greyed/whited out but the remaining graphics (neck, background) are fine. I've tried 3 different Geforce drivers (clean install with DDU, reset all settings, tweak settings ++) from the newest to about 1+ year old (425.xx). I've lost track on whats installed now in terms of mods: i had none, but ive thrown in "Achievements" from nexusmods, and then multiple variations of respec mirrors, including the in game gift bag one. Whatever i do, breaks all the portraits and the best case outcome so far is getting them to only look like low-res/noisy variations of the original...
I dont have another system and im not willing to reinstall my OS to try and fix this... its such a good game, but this really ruins the experience for me and is just so frustrating.