Need some help with improving the print quality with PETG. I've tried a couple different filaments and they all come out the same. There are no issue top side but if the angled bottom side is printed on supports, there are significant unevenness in the result. The corners also come out looking wavy. I'm using the Duramic 3D PETG filaments mostly. I also tried Overture which was worse. I print the Duramic at 240/80, but I also tried 235/70 with fan at 30% and only negligible improvement.