Like ABS, ASA suffers from layer adhesion and peeling issues, and it needs to cool down gradually to prevent these issues. Keeping the cooling fan at 100% for the print will induce temperature differences and abruptly cool the layers, thus leading to warping and layer separation. Switching OFF the cooling fan will allow the layers to cool down slowly and uniformly, resulting in better print quality. If your print has bridges and overhangs at a 5-10% speed, it will yield good quality results.