Obviously, I haven’t done uv mapping for a while. Last time was three years ago (jeez I’m so slow aargh it’s too late for me save yourselves). So while I remembered how they worked and seem to have gotten better at actually making/unwrwapping them, I managed to completely forget what they were. So when I was setting up the paint object, I automatically selected the largest they had available (16k), because in Krita I always paint on 16bit canvases.