Artifacts happen if you push the memory too far. I don’t know if the new OC scanner can focus on memory overclocks.

Hi,
Best way I've found is to lower the core clock to 2025 or so and increase the memory till you get fragments.
After you get fragments dial it down till they disappear.
 
Then raise the core clock until it gets unstable and dial it down till it's back to stable.
 
Run some benchmarks time spy/ fire strike even final fantasy XV is a good all around benchmark test.
Then test in an actual game once you've dialed in from benchmarks.