Hello, I have a problem while playing, strange horizontal bars appear, not always, but quite often, sometimes a black screen can suddenly appear for a few seconds and nothing is visible while playing and it appears again, I have tried various options, from turning off g-sync to enabled, updating drivers from components to the monitor and performing various graphics card stability tests for artifacts I will add that the monitor was already under warranty once in May this year and I received information that it would be replaced with a "new" one and apparently that is what happened. I received a product with a different service tag.