I got a 4k model XB280HK g sync monitor with 2 gtx 970s in SLI others on you tube ect getting low frame rates but I run games on medium settings not maxed as same as them but I get 60 frames overall like games like gta 5 tomb raider and rise of the tomb raider , why are they getting low frame rates and i'm not ? is there something i'm doing wrong ? I got it connected using DP