Is there a faster way to duplicate and rotate layers?

[Ofnuts]

If you want to emulate a 33rpm you need a turn every 2 seconds, and if you use the "slow" rate of 10fps, that's just 20 frames (18 degrees apart). At the standard rate of 25fps, you need 50 frames. Note that each rotation will introduce a slight blur, so you have to rotate the initial layer with increasing angles, and not rotate the previous layer with a fixed angle. It is however possible that you get a slightly smoother look if you apply a light radial blur to all frames

Otherwise, yes, a script.