All of your posts suggest that you believe the drone should point to waypoint 2 when flying from waypoint 1 to waypoint 2. That is not the case (unless you are using the “Auto (TNW)” heading mode. In “Custom (WD)” mode, the direction your drone points is determined by the heading at each waypoint, not the waypoint’s position.
Back in post #3 I asked you this question:
Also, when flying manually, and simply moving your left stick forward, does your drone fly in the same direction as the camera is pointing?
I have not seen an answer to that question yet.
If your answer to that question is “no”, then what you are experiencing might be a known problem with some of the Phantoms where the yaw seems to be off by a few degrees. If this is the case, I would try these three things (although I doubt they will solve the yaw problem):
- Do an IMU calibration
- Do a stick calibration
- Do a compass calibration
I’m only suggesting those because they are easy to perform and performing them would make sure everything is calibrated properly.
I have read one report of someone solving the Phantom yaw problem by demagnetizing his drone using CFixer. Is it possible that your drone has spent some time near a strong magnet?