Hi, Thanks for the quick turnaround – I updated the firmware to the latest but still can’t go above 30Hz.  From a scan through the forum it looks like I am hitting the HDMI 2.0 bandwidth limit because I can’t bring the colour depth down to 8bit.  Do you have any dealings with users who have managed to lower the colour depth on Windows 10 with Intel drivers?  The only option I have available is 32bit, with the latest Intel drivers.

Actually managed to get to 60Hz using a Custom Resolution with the settings listed at <a href="https://insights.club-3d.com/thread/cac-1070-no-audio-at-4k60hz-with-intel-hd-4600-on-samsung-tv/#replies_10273″>https://insights.club-3d.com/thread/cac-1070-no-audio-at-4k60hz-with-intel-hd-4600-on-samsung-tv/#replies_10273 – thanks for the help, and the forum.

In case anyone else stumbles across this thread and needs help I was able to get 4K 60Hz and 54Hz with the following driver / Custom Resolution settings:

Hi JimOCallaghan,
Good to hear you got it going 🙂

Thanks a lot for the feedback.