Coolsky MD 80 Pro -stuttering-

I've just installed the Coolsky MD80 SP2 in P3D V2. Flying is smooth, with the exception of small stutters every 10 -15 seconds. Not a game killer, but still, on approach...

Not very much info on the net, about this particular plane + p3d v2, so I turn to the ultimate oracle.  :lol:

Rotating the external spot view seems to make the stuttering worse. It's almost as if the plane can't keep up (?)

Anybody experiencing the same thing?

Thanks in advance.