- the timestamp is only used for logging and log analysis. For that it's
important to have the timestamp when a setpoint becomes active.
- there was a consistent problem with the position_setpoint_triplet
timestamp, where the timestamp was just bogus. Timesync seems to work
correctly though. Might be a problem on the sender side?
For example here:
https://logs.px4.io/plot_app?log=41918a7d-4c1d-464d-9abe-aef2c0818d92