Just to clear things up a bit more:
The Amplitude is how much the Texture changes during the loop. If you have an Amplitude of 1 and 100 frames, that would be similar to an Amplitude of 0.1 and 10 frames, because the change between two consecutive frames would be in the same range.
So, if the changes between two frames are too large (choppy animation), reduce the Amplitude (or increase the number of frames, but that is usually not an option…)
