Hello! I have a Tarot 650 with naza v2 and gps. Tiger motors 3508-20 kv 580 and props 15x5 14.8volt 5000mah x2 lipos. I have a video link to how it looks when in GPS ATTimode.
It doesnt work good at all.   
Can someone please help me?

Best regards Andre

Calibrate the IMU and Compass; Lower the basic gain value in 10 per time, then check the assembly and propulsion system.
Did you change the Motor/ESC before?

Have you flown it higher than what you have shown in the video? What I'm seeing is what would be expected when flying so close to the ground, your quad is being buffeted by the prop wash hitting the ground. It also sounded quite breezy which would have compounded the issue even more.
Do the flight again but be at least six or seven feet off the ground.

Usually if the gains are set two high the rocking motion would be more severe and you would hear the motors continually changing speed as the flight controller tries to compensate for the overrun.

Regards

Nidge