Time warp stops every hour

[Cephalos]

So I have this problem - every time when I use time warp, every hour (ingame) warp stops, I got info that "KJR calculaters physics" and my trajectories became odd. For instance, my flyby near Mun at 25 km height become flyby at 60km, and next hour 220km high.

Mods I have installed are:

Kerbal Alarm Clock

Ferram Aerospace

Atmospheric Trajectories

Kerbal Joint System

Stage Recovery

Active Memory Reductor

Kerbal Engineer Redux

Precise Node

Tramsfer Window Planner

Interstellar Flight

Enhanced Navball

Docking Port Alignment Indicator

Procedural Fairings

DMagic Orbital Science

ScienceAlert

Aviation Lights

Texture Replacer

They are all up to date. I guess it's not a bug, but a some feature, that I have no clue where to find and turn off...