Informal:
* வேகமா பண்ணு! (vēkama pannu!) - This literally means "do it fast!"
* சீக்கிரமா பண்ணு! (sīkirramā pannu!) - This means "do it quickly!"
Formal:
* விரைவாக செய்யுங்கள்! (viraivaaṅka ceyyunga!) - This is a more formal way of saying "do it quickly!"
Other options:
* அதிக வேகத்தில் செய்யுங்கள்! (athika vēkaṭṭil ceyyunga!) - This means "do it at a higher speed!"
* நேரத்தை வீணாக்காதீர்கள்! (nērattai vīṇākkāthīrka!) - This means "don't waste time!"
The best way to choose the right phrase depends on who you are talking to and the situation. For example, you would use a more informal phrase with friends or family, while you would use a more formal phrase with someone you don't know well or in a professional setting.