walbert hi u doing nick I have the same problems for 2 years flicker horizontal and vertical Mac OS high Sierra Mac book pro (Retina 15 inch mid 2016) processor 2.2 Ghz intel core I7 memory 16 gb graphics intel Irish pro 1536 mb
Nick In his other discussion he said that it took him 3 days to fix, so I assume that he has figured out what fixed his problem.
walbert Solution 1) Go to System preferences 2)Displays 3)Resolution moved to scaled 4)click on default (its the middle option out of the 5 options) 5)Gather windows 6)ensure that you are using the correct HDMI Splitter (I use the "KanexPro 2-port 4K D+HDMI Splitter" or 4 port also works, I will also upload a picture of the one I use ) 7)Resolution moved to scaled 8)click on default (its the middle option out of the 5 options) 9)click the color tab and calibrate (on the right) your display https://www.amazon.com/Kanex-Pro-SP-HD1X24K-2-Port-Splitter/dp/B00UTXKSJG Feel free to contact me if you have any questions
geeebeee I don't think that'll work for me - I output mine to 720p - are you saying i need to do something else??
skinnyguy I can only choose default or scaled. when i choose scaled, i only have 3 options. default scaled is the top option, not the middle. i calibrated both laptop display and extended display. no change in results.
skinnyguy however.....tinkering around.....i changed my extended display refresh rate from 60 Hz to 30 Hz. that seems to have worked.
skinnyguy tried it at 50. once in a while i would get my glitch. back down to 30 and itʻs running smoothly.
