How does one turn off Visual Positioning System? Cant find the setting. I heard its recommended to turn it off when flying over water?

Hi no you can't turn off vps only obstacle avoidance

Currently, that option is not available for Spark.
Advice that if you fly over the water, make sure the altitude is at least 8m

Thanks everyone!

Yes, thanks for the reply above, Spark doesn't support to shut down the VPS system, but obstacle avoidance can be disabled.