f-14b AP stability?

[eatdirt]

Hi there,
I am getting some funny instability when I switch on the AP on the f-14b, I was close the qbarmax, but without the AP the plane is very stable.
I have made a short video, I am switching off the AP just before the last turn, you can see the plane stops wobbling around.
Am I doing something wrong? Is this expected?

test_f14_AP.webm

Thanks,
Cheers,
Chris.