You might have a loose contact in your VPS system. If the message came but went away, its probably intermittent.
Usually if its a VPS calibration error, it will let you calibrate, and take care of the message.
Sometimes it does and sometimes it’s a few meters off. I had attributed that to windy conditions or if I had changed the yaw while RTH. It does slow itself down during landing but it seems like a pretty normal rate
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