Well, I need to run back now to Future Shop and return that TV lol,
it did not work as expected, very disappointed.. so much lag , 3ds would not show lines in wire frame all the text menus were so small,
but the windows interface was ok mind you had to be setup as 150% size at 2160.
The tv is great but not for computing at 4K, even when I set the tv to 1080 there was still lag from mouse and keyboard,
I will be using my existing 40" 1080 samsung as it works great except for minor visual imperfections....
Lesson learned..., I will give myself one more day to see if there is anything else that can be done.
Thank you for all the replies.
Andrew
Quick update: The mouse and keyboard lag was completely eliminated by renaming the HDMI input to PC, it performed very well, and I just want to say that the TV is absolutely PC ready, however the software and the os is the problem, especially 3ds and PS would open in 2160 the interface was unusable other software would open in 1080 and would look blurry, photos and video displayed amazingly stunning...
I wish I could just keep this tv and make it work, it's a great display but at least a year ahead of it's time...