Bad Horizontal Screen Tearing.

[Rezirex]

I just recently started playing SMBX, and am having trouble getting it to run smoothly. Whenever in fullscreen mode, I get very bad screen tearing. I have done some troubleshooting to try and figure out what the problem is. Here are the things I've tried/discovered.

-enabling Vsync in the Nvidia controll panel doesnt't help, but has helped with all other games that I would get tearing on.
-It's not a monitor issue because I can see the tearing when recording. (Video below)
-Changing monitor refresh rate in Windows control panel didn't help.
-Also, when recording, the tearing seems to be on a smaller scale. (I record with a built in software called Nvidia Shadowplay)

Video (Tearing is especially noticeable in the beams that are attached to the pipe. When not recording, the tearing is much worse)
http://youtu.be/Rngkj8EG9CI

Specs
Alianware x51(I know what you're thinking, it wasn't my choice)
64-bit Windows 7
Intel i5-0444 @ 3.10 GHz
Nvidia Geforce GTX 645
8gb DDR3

[Rezirex]

Video added to initial post. Please give me any advice you have, and let me know if you have experienced anything similar.

[Enchlore]

Maybe that's an effect of frameskip - try checking the "Disable Frameskip" box when you're booting up SMBX.

[Rezirex]

Didn't work
I noticed now when I record, the tearing is gone completely. I have the recording software set to 60FPS so I assume this has like a universal Vsync effect when I turn it on. For some reason though, when I turn on Vsync in Nvidia control panel, it doesn't seem to affect SMBX