When using Audio Warp, sound gets corrupted.(video attached)

Hi.

I’ve been warping some of the audio on a project in Cubase 7.5, I havent had any problem with it, until it suddenly didn’t work as it should.

Now, if I just turn the audio warp ON, the audio gets corrupted some how, and it “Boings” at some places.
Please see this 20 second video of the problem:

Note: 1st sample, the audio warp is turned ON. 2st sample, the audio warp is DISABLED.

https://www.youtube.com/watch?v=6J-1YA7Dtkg&feature=youtu.be

I hope someone knows how to fix the problem. And I have NOT been changing the waves too much.