Severe framerate problems (frequent dips down to the mid twenties or lower) is one of the trade-offs I simply can't accept with 3D. Or for that matter with 2D, as it's not exactly been an entirely uncommon problem throughout this entire console generation.
I'd rather have the visuals scaled back than having to suffer through framerate problems.
And as far as visual trade-offs go, I'm not
a big fan of resolution drops as a near standard resolution image in 3D really isn't very pretty in most cases (Killzone 3 suffered terrible in that regard in 3D, Uncharted 3 supposedly also has a significant resolution drop in 3D, but somehow they've managed to make it a lot less apparent).
For proper stereoscopic 3D on the current aging (ancient
) console generation, the best option in my opinion are less graphically demanding games (not as heavy on the fancy shaders, real time lighting effects etc.) running at 1280x720 at a rock solid 30 fps or better.
GoW: Ghost of Sparta is a great example of this. Very smooth performance, very sharp visuals that obviously aren't as technologically advanced as eg. God of War 3 but still look artistically great, and phenomenal 3D depth.
But obviously THE best option would be a PS4/XBox 720 sooner rather than later