Trump's weaknesses in VA are exaggerated on this forum.
That's probably true as of now. Sketchy polling company, but this looks just like 2012 in the head to head and a lot like 2008 with Johnson (who will surely drop, and takes 2:1 from Trump here). So it's probably enough to trend D again but Clinton's not winning it by 10 when she's +1-2 nationally.
Virginia has been drifting D, and demographics (people moving in from mostly D states and taking their political values with them) cause the trend. Virginia could now vote more strongly Democratic than the US as a whole.
Virginia going 55-45 for Hillary Clinton indicates a landslide characteristic of Bill Clinton in the 1990s or Obama in 2008 (365 to 380 electoral votes), if not bigger. Bigger? I don;t see that yet.