Two external monitors (NUC 6 i3 - HDMI and DP built in ports) connected and working but display is washed out to a point of no use.
R69 not affected and is the only good image I could find without this problem.
Tested on ATB R74 Vanilla and Special - primary display remains washed out however all other external monitors in extended desktop mode are not affected.
Two external monitors (NUC 6 i3 - HDMI and DP built in ports) connected and working but display is washed out to a point of no use. R69 not affected and is the only good image I could find without this problem.
I have also seen an exchange on the xda forum about it here https://forum.xda-developers.com/hardware-hacking/chromebooks/guide-installing-official-chrome-os-pc-t3865697/post78805849#post78805849
Search for "external monitor" "washed out" to find the exchange. They also report R69 the last one without the washed out issue.