I used to have the same issue then changed my technique on the leather. My edge lasts longer now and I'm getting better shaves. Took me bit of experimenting and some choice 4 letter words but I eventually figured it out.Not sure if this goes under honing or stropping category..
Used to finish with a 12K Nani, then strop.
Stop did improve the edge.
I now progress to 12K, then finish with lapping film. (thanks to Slash)
Using it right off the film, it's a great shave.
If I strop before shaving, or prior to the next shave, edge quality seems to go backwards.
Strop too coarse? Technique?
My linen strop does not seem to affect the edge..
Doing something wrong..