Can anyone elucidate me on what is happening here?

I honed my Dovo Special 6/8 to the best of my ability -- 4k /8k /yellow couticule / linen w/ white paste progression. Got it not as sharp as when I got it honed by Lynn but pops arm hairs pretty well.

I do about 50 laps on the leather. Hanging hair test passes on most of the edge.

Proceed to shave my right cheek/sideburn area. Smooth as butter, easy cutting, no resistance! Feels almost like I did an ATG pass with just a single swipe down! At this point I am happy until ...

... I get to the other side of my face. Blade pulls a lot. By the time I get down to left jawline the razor feels pretty darn dull and is pulling at my face like a cat clawing at a couch.

From HHT sharp to dull in a matter of seven or eight strokes? What the hey?