Shown travel times do not match with actual travel time.
At some spots on map when arty ordered to attack, its just do not attack.
When enemy are in my arty range, arty do not open fire and enemy could get into melee range without 0 shots from my arty, same I could do to enemy.
Bomber attacking to moving target ( ship ), bomber gets to old position and sharp turn like 110 degree and adds 15 minutes to airplanes travel time.
Something odd going on with airplanes, sometimes cant see where exactly are those planes and some wrong travel times appear, at least visually .
Submarine got stack in the middle of North America and could not move it.
Maybe something has changed ingame mechanics, I just returned after some time.