Cells jumping when appearing or changed

I've adopted the techniques from 'Modern Collection Views' and I get a strange jump in the cell when the collection view appears on screen. The cells are slightly too small, and grows a couple of pixels. It looks like it's the spacing between the text and the secondaryText of the .subtitleCell() the grows from zero to some pixels.

Some cell also jumps a bit the first time it's updated.

Code is attached below.