Display settings R6 vs R7.....?

The edges of my polysurfaces seem to blend in too much in R7 compared to R6, I checked all the settings and they are the same. See attached file both are in Ghosted mode, left side R6 and right R7 notice how the edge look almost highlighted in R6 but not R7. It makes snapping to the correct corners harder than I like.

Any help on what to change in R7…?