I experience the following bug:
The screen starts flickering when I use freesync in a fullscreen application on my Samsung CFG70 screen.
How it looks like:
About every 1 second, the screen becomes a little brighter for a short moment, then goes back to normal.
It is very annoying and gives me a headache. It makes me think something is wrong with my eyes.
You might not see it instantly, but as soon as you know it's there, it's impossible to ignore.
I have to switch to borderless fullscreen because the flickering is so bad.
Monitor set on "Ultimate Freesync": Bright flicker every 1 second
Monitor set on "Standard Freesync" Less bright flicker every 1 second
Monitor set on "Freesync: Off" No flicker, but no freesync.
Game set to fullscreen: Flickers
Game set to borderless or window: No flicker
Desktop and programs: No flicker
Game: It happens in all fullscreen games I have tried. For example League of Legends (very noticable), Rocket League (hard to notice), Stellaris.
Happens equally on driver 17.4.2, 17.4.1, 17.3.1 (probably all others too, I only tried these)
RX 480 stock version
Samsung 24" CFG70 connected via DisplayPort
Dual monitor setup
Windows 7 SP1