I have been having strange display issues with my RX480.
I have the screen blink issue when playing video, which I have seen reported elsewhere in these forums. I only get this if the video is not playing full screen.
Also get these crosses appear on some graphics on web pages. it happens on a number of web pages. It clears if I go to another browser tab and then back to the original tab. Example shown below.
Radeon Software Version - 16.11.2
Radeon Software Edition - Crimson
Graphics Chipset - Radeon (TM) RX 480 Graphics
Memory Size - 8192 MB
Memory Type - GDDR5
Core Clock - 1266 MHz
Windows Version - Windows 10 (64 bit)
System Memory - 16 GB
CPU Type - Intel(R) Core(TM) i5-4570 CPU @ 3.20GHz
Any help greatly appreciated.