XP12 Flight Instability

Hi Rotorsim

So I posted this a while ago right before the website went offline.
I'm finding the XP12 version unstable, In XP11 it's a dream to fly, but as you'll see in the video the experience I'm having is very differnt in XP12.
Even sitting on the ground with collective fully down I the helicopter moves around.
And in the video you'll here me say 'moving left the tinyest bit' and the chopper jumps quite hard left, what I'm finding is cyclic left results in sharper fast movements, cyclic right is much smoother.

Here's the vid:  drive.google.com/file/d/19AoxP9RNtEwqrQN...RvT/view?usp=sharing  
Note: this is clear weather, no wind

it was suggested long before this video to make the Flight calculations per second higher. But I see the same results with it set 10, and with graphics set low (getting 70 frames per second).
In this vid the graphics are set to more detail, but the effects are the same.

Any ideas? Is this a known thing?

Cheers,
Mick

PS no landing comments please

 

Ahh.
So it looks like there was update around November last year!
I've just downloaded and flown with 5.2.2 100 times better. Still a little jitterey if I'm too rough with the controls, but I'm guessing that's realistic.