we're all guilty of glancing through this pic: but we simply don't have enough information, and speaking for myself, I just concluded that it's either FCAT bug(not being up to date with DX12), or AMD output bug(less likely), either way, which will be quickly fixed. If Hilbert had made a big fuss about this, I would understand the need to defend AMD. But all that G3D said is that it LOOKS LIKE VSYNC, and no claims about AMD stuttering or anything like that have been made. As for over-zealousness of ET and this Hruska guy, that does not surprise me one bit. They've been in bed with AMD for quite some time. At least thats what the back of my mind says.