Overclocked Dell U3011 to 90Hz at 1080p

[nimbulan]

Thanks - I'm hoping it's just a slow response issue. I have a Seiki 39" 4K arriving on Wed. and I will using it for 1080p @ 120Hz so I'm hoping it's everything I've been dreaming.

I suspect that's the most likely explanation. It would be a similar effect to motion blur in games. While I've been testing Far Cry 3 I've had a hell of a time figuring out how to turn the game's artificial motion blur off. While it was on, it was very difficult to tell what my framerate was, even going from 50 up to 90. After I finally managed to turn the blur off, even going from 50 to 60 fps was quite noticable.