Keeps on flickering every time I play a game in desktop

I bought a new LG W2452V 24-Inch. I was able to use it and it is working properly in the last few days. Recently I tried to play a game. It keeps on flickering while playing the game. I did not install any device or software in my desktop. What could be causing this issue? Is it my monitor? Is it my driver? Can you tell me what is the source of this problem? Can you show me flow by flow procedure on how to resolve my problem with this monitor? Is there any way that we can still make it work? Or do I need to return it?
Please help me. Thank you!
