Two elements with same data-rellax-speed values moving at slightly different pace

[btjackson11]

I have 8 different elements moving at different speeds except for two of them which are both set to:
data-rellax-speed="8"

Both of these elements are moving at a similar pace, but not quite the same and over time that space increases.

See the attached inspector screenshots that show the transforms at different amounts while scrolled.

This is happening on all browsers and mobile as well.

[Olindn]

It's because the elements have different sizes resulting in a different calculation / position