To my knowledge 3d bluray is filmed at 24hz not 23.976hz. When I play a 3d bluray it stutters all over the place every 5 mins. I tried to override the refresh rate manually in the NVidia settings but it literally kicks it back to 23.976hz. This maybe a possible bug that needs to be looked at and fixed.
Is there anyone else who is having this issue? Playing 2d disks play perfect the way they should at 23.976hz.