Try something for me...Find a VOR that you can see or find from the air.
On VFRMAP.com plot a radial to another VOR that is not too far away, lets say 40 to 60 miles.
Fly the radial from one VOR to the other using the plotted radial and see if it takes you right over the second VOR.
I did just that, and here is what I found.

I plotted a course from the OTT VOR to the SBY VOR.
The radial from OTT is 120 degrees.
When the needle indicated station passage I froze the sim and took these captures.



The GPS is dead on as is the VOR.
The depiction of the plane in the GPS is facing the wrong way because
I hit the "Y" key to bring the plane down in altitude.
The distance from OTT to SBY is about 50 miles.
At 60 miles, one degree is one mile wide.
I have not seen a problem with the VOR vs GPS.
Lets see what you all find.
Lou
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