With exact same game settings, it runs bit better... Not by a lot but it's better. I think it's because even though it's more pixels to run it's only 1 viewport vs 3 I had before. After going onto settings I found out my PC sees this tv as 2 monitors, in eyefinity. The image on the tv is really good I have to say that... But I am bit unlucky as within 30 min of having it on, I saw 2 stuck pixels ... I can't be bothered to go and return it for another one so I'll just live with it (but this is not nice considering I paid good money for it... I guess 8million pixels or so it has there is good chance some could be faulty... It's just my luck I guess.
One thing I don't like now is the stretching the game makes when having bit higher FoV... Everything has some trade off.
I have started to change my flying setup more, I want to fix the tv bit lower (on desk it sits too high) I'll try putting one of the 27" bit below the tv to see if it's good extracting instruments on it... So no PC use for a few days for me.
Was it worth it? I am not really sure to be honest, The image is really excellent... At 80 deg FoV everything is nice and clear and readable, and cockpit feels more life-size... I just dislike the DCS stretching on sides with higher FoV, the tv price and those damn 2 stuck pixels... And I feel bit guilty for spending so much on my hobby...