Skid, I had the same problem. I tried everything, faked the EDID, i got an okay picture at 4K 30Hz, but it was still not perfect: after a while, there were blurry text sections and even some jitter, which is totally inacceptable (by contrast, I had a pixel-perfect 4K picture on an LG 65UG870V, or even on a cheaper 4K TV by Hisense). The (German) support only sent me an ineffective, even older firmware and that they had no clue when new firmware was going to be available. Not with a single word did they mention the EDID or the PC 4K image problem or whether they were going to fix it, which is why I sent the XT910 back.