I fiddle around with the Overdrive options in the Radeon Settings and find a stable overclock that has worked for over a year. One day (approx. a month ago) I completely break my Windows Installation and have to switch to Linux for a few days until my new Windows gets here.
I install the new Windows, which is the same version as the one before (Windows 10 Pro 64bit) and again try to fiddle with the Overdrive options.
Everything is completely the same except the Windows key and obviously some folders and files. The hardware is the same, the BIOS versions are the same, nothing has changed. Except the fact that my secondary monitor starts flickering as soon as I deviate from the stock settings. It doesn't matter by how far or in which "direction". As soon as it's no longer stock settings the monitor goes batshit.
Why does that happen? More importantly how can I remedy it?
Thanks in advance :-)
Attached is a Video showing the flickering.
I'm experiencing the same problem with my 280X. I too had a stable overclock that worked perfectly, until I bought a second monitor a few months ago. The second monitor starts flickering frantically as soon I deviate from stock settings. I hoped that the problem would be fixed in the update, but I can confirm that it is still present in version 17.12.1.