15 w diode laser

Hey all, just wondering if someone can help here. I have no idea what my maximum speed can be output from my hardware and Laser. It’s just if I do a 4-inch by 4-inch picture it could take up to nine hours. So I just wanted to see how I could speed it up and I don’t know if putting in a high number like 6,000 for Speed actually gets to that speed. It didn’t look like it really goes any faster trying it from low to high. It’s a yorahome 6550 product.