So first of all, GE in a rotorcraft is different from GE on a fixed-wing aircraft. The fundamentals are the same, of course, but in a rotorcraft the relative velocity of the blade/wing isn't connected to the velocity of the airframe the way it is in a fixed-wing aircraft. In a fixed-wing aircraft the velocity of the wing and the velocity of the airframe are the same, of course. But in a rotorcraft things get very complicated. The upshot of all this complication is that the GE effect is reduced as the rotorcraft's airframe starts to move. The faster it goes, the less GE you have. So you might notice some differences while hovering under an overpass, but shooting through at 60 MPH the GE is effectively a no-op.

If you really want to know the gory details you'll have to read up on helicopter theory. It's way too complicated for an HN comment.