I am seeing artefacts on HDMI out from ADV8005. 1080P input goes to 7619 and then 8005 is up scaling to 4K. Interestingly this doesn't happen with some of the cables. When I tried 5 good quality high speed cables, with two of them output is clean. With three of them I see artefact with pink stream of dots. Picture is attached. Any TX PHY level parameters need to be fine tuned? Any suggestions would be highly appreciated.