I used the 'best' HMDI port on my TV which is the first one but I tried 2 others as well. MY GPU is a GeForce 1080 6gig which is capable of 4K 60hz but I just found out my cable is a 1.4 HDMI. So I guess thats the only problem ? a 2.0+ is expensive since I need 30-35 ft so Id be sad if I get one...