Iv just got a 4k oled hdr tv, my gaming rig has been connected to a 50" plasma for the last few years and that's 1080p. Im finding the Titan x a bit choppy at 4k with max settings on some of the newer games. I know the 10x0 cards been out for a while but are they still worth a buy? Budget is around the £700 mark can go a bit higher but want to add it to loop so have to factor in spending another £100 plus on a block. Would a 1070/80 do it or am I limited to 1080ti or titan xp for 4k 60?