If I use a driver with a small bone moving distance (eg: 2cm or 0.02bu), using its Transform Channel, the curve makes a strange draw. I think it is because of an optimization or something else. This affects the use of the driver.

Open the file, look at the curve. Move the bone and look at the object.

I make a character who has a bone in its eyelid and I want to move that bone only 2cm (more or less, like a real eyelid). The eyelid is opening and closing strangely.