Most commercial embroidery machines will properly embroidery from 500-1000 stitches per minute (SPM or RPM)
Sometimes increasing the speed on any machine might result in less desirable quality embroidery. Pushing the machines speed generally lowers the embroidery stitch quality.
If an embroidery design has 6000 stitches, most all commercial machines will complete the job in under 10 minutes. The average embroidery logo is about 4000-7000 stitches.