In all games, shadows have small rectangles that flicker

Graphics card drivers are completely up to date. Operating systems have been Windows 7 and Windows 10. Graphics card is a GTX 660M
This happens in multiple different games. WoW, Archeage, H1Z1, Runescape, and more.
Take a look at the below screenshots and you'll see exactly what I'm talking about.
-
My comment below shows more images of this.
Best Answer
You are using a NVidia card.
It probably is not a hardware problem as shadows are not 'special', so the issue would appear on any texture.
There is a big chance that it is Ambient Occlusion. Go to your NVidia Control Panel, open the '3D' menu and find the 'Ambient Occlusion' option. Turn it off. That should sort the issue out.
Pictures about "In all games, shadows have small rectangles that flicker"



How do you fix game shimmering?
Shadow is a cloud gaming service that gives you virtual access to a beefy PC rig. To put it simply, Shadow broadcasts a virtual machine on your devices. You're simply controlling a high-end PC without actually owning one.What are game shadows?
Is Shadow Quality Cpu Or Gpu Intensive? As a GPU, shadows tend to be very demanding \u2013 Turning them off would make games look pretty ugly, whereas not turning them on would make them unrealistic. As a result, it's usually your first choice between low, medium, and high.Are shadows in games CPU or GPU intensive?
Right-click on your desktop. Select AMD Radeon Settings. Go to Display. Toggle the GPU Scaling option to Off.How to Fix Screen Flickering or Tearing while Playing Games In Windows 10 [Tutorial]
More answers regarding in all games, shadows have small rectangles that flicker
Answer 2
The only time I ever saw something similar to this was when I had a dust clogged video card that was overheating. it got worse over time and eventually quit. the fact that it happens in all your games and operating systems would suggest a hardware problem.
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Allan Mas, Allan Mas, Anete Lusina, Allan Mas