OK I understand the concept of having more screen in your peripheral vision field, but losing resolution is never a good thing.
Think about what you're doing, you're taking 1920x1080 (2,073,600 pixels) and chopping it down to 1920x810 (1,555,200 pixels). I think that's what Tegiri Nenashi was pointing out. You are choosing a wide ratio over resolution. Of course with 25% less pixels to render, you're going to get higher framerates. The tradeoff is less resolution. And most of us PC gamers are looking for max resolution, not less.
This is why many gamers stack 3 monitors side-by-side. They get the same wide-screen benefit but don't lose any resolution, in fact they gain it. 5760x1080 (6,220,800 pixels) looks amazing. Imagine if you stacked 2 or three projectors side-by-side. You would get twice or three times the resolution in the same space. Now THAT would be freakin awesome.
Quit readin my signature ya stupid signature reader.