graphics speed

My game has a large number of circles. I currently use display.newCircle. But i wonder if using display.newImage (for the same size but with alpha blending) is faster?

I doubt there would be a very big difference. If you have an estimated number of circles you need and performance is taking a hit due to spawning them at runtime, you could consider loading enough circles ahead of time and then bring them on to the screen as and when needed

I spawn 1 new image with transparency and 3 new solid circles each frame.
Then I move all of the accumulated objects around each frame. There’s a lot!
so, I wonder if the 3 circles are drawn as a circle or as an image of a solid circle. Because I guess drawing the circle with math is slower.