Flickering Hair Issue

When I played Mass Effect 1 while my PC had ATI GPU I didn't had such issues, now I have Nvidia GPU and weapons are flickering, hair are also flickering, which isn't so annoying as long as femshep has long hair, but it's very annoying if femshep has short hair. Played with male Shepard and nothing like this happens. I remember seeing in ME 3 credits text Nvidia the way it's meant to be played. Well if this flickering is part of how it's meant to be played then I'm disappointed, especially because, as it seems, there's no solution for this.