did you downloaded the extra texture package?... if not then ultra and high will be the same.. ultra textures doesn't load until you download the texture package.. and is certainly a performance killer even at 1080P with 4GB cards..
I am almost sure I did, but I will definitely look into it.
That could be the reason. I was surprised at how little ultra and high affected performance so little.
anyway, I don't know if this horse has been beaten to death, but... 970 has 4GB VRAM.
Segmented? Yes. but probably better that the last part is there compared to when it is not.
4k is certainly not a waste of money of the player in question will not settle for anything less than 4k.
Will you require absolutely the best hardware to get the most out of 4k in the state it currently is? Most certainly.
However the time you enjoyed wasting is not wasted time. Same goes for money.
My choice of 1440p over 4k is more a practical choice and less of a monetary I could easily push the cash up a bit more to go for SLI 980's instead of 970's (possibly even breaking even since 4k monitors have gotten cheaper now), however, 4k is currently far too reliant on SLI working properly for my liking, and the fact that DSR exist, which meant that, when I have the performance to spare, at least I can use DSR to get some of the 4k goodness.
That hasn't stopped me from drooling over a good quality 4k panel though, I always wanted to see for myself what 4k fuss was about, my chocie of 1440p was based on theory.