Rotating Face Won't Stop Shaking I'm trying to rotate an object's face and keep having the problem where it will not stop shaking, even if the mouse is moving. 

Here's a giphy link to show what I'm talking about.

Edit: Here's the blend link. It's not the snap-on option. I don't think I'm using modifiers on the object, but Im pretty new to this and could be wrong.
My first idea is than you have "Snap tool" ON. Check Magnet icon (in horshoe shape) on 3D Viwe bottom bar. Next to "Proportional editing". Keyshort is "Shif+Tab". Can be easily switched accidentally.

If this don't help you, consider uploading your .blend. Because we can only guess now.