Did I miss something in the manual? I had to run a simple mission to “reverse engineer” of when the Altitude & Speed change when encountering a waypoint. This is what I learned.
The SPEED changes as soon as the waypoint is reached that has the new speed entered into that waypoint. But the ALTITUDE starts changing to the new altitude that is entered in say “waypoint 3”, as soon as the drone leaves waypoint 2, the waypoint before, even though waypoint 2 had no changed value.
I guess the mission waypoint icon’s value posted on the mission map, is the altitude that the drone will “Arrive” at. The change in altitude seems to be initiated at the prior waypoint that had no parameters changed.
I recall reading nothing to this effect, and although simple, I was initially under false impression that any and all changes would occur at the waypoint that was altered.
Did I miss this in the manual? Jim
The SPEED changes instantly to the new speed value exactly at the waypoint that the new speed is set.
Unfortunately the speed does not interpolate or ramp up or down from the previous waypoint to the next.
It would be nice if Litchi fixed this.
The ALTITUDE starts changing at the previous waypoint to the new altitude set at the next waypoint.
Ramps up or down in an interpolated method.
I was initially under false impression that any and all changes would occur at the waypoint that was altered. = They do.
As I stated, this is what I learned today. Back to my question… is this stated clearly in the manual? I must have missed it if it were.
Read the manual again 
But it doesn’t work on dji fly drones
Having the craft gradually ascend or descend in anticipation of waypoint altitude changes ahead could be a good thing or not, depending on operator preference. That gradual flight level change makes for smoother cinematic footage, but the converse is that such a gradual climb or descent may conflict with obstacles or terrain in hilly topography.
Having the speed change abruptly in response to waypoint parameters is impressive regardless of whether such an instant response is preferable. I haven’t answered your question, but I do appreciate learning about these Litchi waypoint mission quirks now added to my Litchi Book of Wisdom.
There is no need to fix anything, a drone is not a rocket to change speed from 1km/h to 30km/h in 1 second. Moreover, the smoothness of acceleration can be adjusted by turning on or off the obstacle avoidance sensors.
Set another waypoint and don’t change the altitude. Looks like you’ve found a problem where there isn’t one.
The drone will be following the same flightpath from one waypoint to the next.
There is no need to fix anything, a drone is not a rocket to change speed from 1km/h to 30km/h in 1 second.
You did not read the text.
I do not want instant acceleration, just smooth speed change between waypoints.
Moreover, the smoothness of acceleration can be adjusted by turning on or off the obstacle avoidance sensors.
Not true…
Just add more points and change the speed smoothly
If two adjacent waypoints have different altitudes/headings/gimbal pitch, then the these will gradually change as the aircraft flies between those waypoints.
Different speeds do not.