Check your anti aliazing thingummy..if it's off..then it will render terrible. If it's on..it will render it good..though more time. And if it's on fine art.. it will take ages to render..but more than perfect. If you want to print it.. then 300 dpi minimum..no matter if it's a 1 inch by whatever size. And you do know..if your image is 300dpi..to increase the size of the image..you reduce the dpi, and increase the size, but you cannot increase the dpi and increase the size? Then you get all pixelated.