I'm on my phone but I can see the flickering on the stairs in your video, and your settings seem to suggest you did not have aa (antialising) on, you can google aa off vs aa x2 x4 x8 etc to see examples.
I don't think your card is faulty, it's just got the wrong settings somewhere or the game your playing has issues, do you have problems in every game? Cs:go or gtav?
Edit: sorry thread title is all games lol dota2 is another to try if you dont play that, again i think it's settings, if a faulty card you can download msi afterburner and downclock - yes lower the clock speed of your gpu and gpu memory, you tube will provide guides on using msi afterburner to overclock your card we would just be lowering it, not by much maybe 100 mhz each, tho i honestly dont think it is this, I have to go now, i'll check back in a few hours when I have a comp to mess with, gl with this hope you sort it by then :E