Stuttering camera movement

I've been dealing with this problem since FSX, after that in P3D 1.4 and now again in P3D 2.2 and I'm getting so damn tired of it, the pilot eye-point camera that stutters heavely. I can get rid of it for a couple of minutes at the most, by reloading the scenery library, but that resets ATC and I loose IFR etc so that's not an option and it keeps comming back and increases over time, making the camera movement increasingly slower.

All other camera movements are fine, I got a decent FPS (30-40), Plenty of CPU power, GPU power and plenty of free RAM and P3D runs smooth, only the one camera has this problem.

I tried fixing it with EZDOK and than the camera movements are as smooth as can be, but it only works for P3D 2.2 and in P3D 1.4 the programmed camera positions keep changing, as well as other settings for EZDOK. After a couple of days I also started getting problems in P3D 2.2 with settings changing and I cant find a fix for it and I have to run it in legacy mode while other addons I've got cant run in legacy mode, so this isnt an option until a proper P3D version is released.

I've been searching several forums for a couple of years already and I havent found anything about it. I'm getting seriously desperate and I havent got a clue what to do about it.

Can someone please help me fix this problem?