I have stable overclocks. If I apply the profiles when I first bootup, my system is good to go. But if I've been using my computer for a while (maybe longer than 2 hours) and go to apply my overclocks with MSI afterburner, I get crazy checkerboard artifacts. I have to reboot and if I apply my overclocks, everything is ok. I do have the CRU utility and am using it with my asus mg279q monitor and set freesync range from 60-144hz. Not sure if that has anything to do with it. Any ideas?