Animator Skipping Frames

Questions & Answers
1

I have a UI.Image animation with 53 frames in it. (Unity says: Length 53.000, 1 FPS)

I set the frame via:

_anim = GetComponent<Animator>();
_anim.Play("myAnim", -1, index / 53);
_anim.speed = 0f;

The animation is setup with a sample of 1 FPS. Some frames simply get skipped. That is, an index of 14 for example will render the same as 15, skipping 14. 14/53 and 15/53 set the same frame. The 14th frame is clearly visible in the Animation window.

15.0f/53.0f renders frame 14, but 15.1f/53.0f renders frame 15

2

Is this used for better performance?