Andrew Peterson2 said:Is there an app to stress test a graphics card?
I recently picked up a new PC featuring an NVIDIA GeForce 2GB. I installed the drivers that came bundled with it, and while games run perfectly, I'm running into issues when watching high-res movies. I see pixelation—little blocks appearing on the screen—most often when I skip forward in the video player.
I didn't have this issue on my laptop using the exact same files. It’s happening with other movies and series recorded in 720p (mp4) as well.
Let me describe the artifacts better:
the blocks are large, making it look like the movie dropped to a much lower resolution, and it takes a few seconds for the picture to stabilize again.
Are you streaming these films online or playing them from your hard drive? If it's via the web, it might not be a big deal—internet connections can be finicky, and various Flash players or low-quality uploads on sketchy sites can cause playback issues.
First thing's first: install some updated codecs. You might be missing a specific codec, or perhaps a filter in your media player is acting up if you're playing files locally.
Also, go ahead and download the latest drivers directly from the manufacturer's website instead of relying on the ones provided with the build.
If you start seeing constant visual glitches—like spots or lines of different colors—regardless of what you're doing, then you're looking at hardware artifacts.