Installing the ReLive 16.12.1 drivers today caused crazy flickering scrolling horizontal lines on all 3 monitors connected to my 390x.
Lucky a 4th monitor connected to my iGPU allowed me to see something so I could at least uninstall the drivers and go back to Crimson 16.11.5
Windows 10 x64
1x LG 29UM67 (center) via DP.
2x Acer G235H (sides) (the lines are not so apparent but are there)
During the incident I tried changing the LG between 60 and 75 hz at 2560x1080 which are normal accepted settings for the monitor, no change. I also tried turning Freesync on/off. No Improvement.
I assume its another issue.