As I suggested last week (I assume that post helped you?), and Barry now - please do use the Artlantis forums for Artlantis questions.
🙂 But, in any case...
The most accurate way to move in 3D in Artlantis is to use the 2D window - make it as large as you need to be accurate - you can view in plan and various elevations to get the camera and target placed precisely.
The 3D navigation with mouse and modifier keys is "unique" and I have to relearn it every time that i've been away from Artlantis for a while ... and just go back to the 2D window. The 3Dconnexion SpaceNavigator device works in Artlantis as another way of moving around.
The movie path is much more powerful and smooth in Artlantis than is possible in ArchiCAD. The recording of the path, and all of the possible things that can change with each keyframe is a bit peculiar, I think, for anyone used to video editing and other keyframed motion software. As Dwight would say: "those French". But, it's fine once you learn how it works.
Search and read the Artlantis forums; ask questions there.
One of the forum moderators
AC 28 USA and earlier • macOS Sequoia 15.2, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB