Ended game more then year ago, and week ago start new game to make savegame for import.
Have the same problem on win10 x64 steam PoE with tWM 1-2, and all was good before entering to tWM. My old save have problems with items from dlcs - they are pink too.
PC on AMD RX560 and ryzen 5 1600, mb that helps.
Ingame graphic setting changes doesnt help me.