Nope. That isn’t it. My understanding is it essentially has to do with the position being required for an interaction to happen. It exists as a waveform until some interaction (any interaction) requires the position to be finite for the interaction to take place. That collapses the waveform (aka, the likelihood for all possible positions collapses into just one possibility) and the interaction happens. It has nothing to do with speed, only the need of the position to be known to perform an interaction.