Vectorscope difference between play and paused

Hello there,
I'm new to Speedgrade, when I see the vectorscope the levels of the colors are different when the video is paused compared to when the video is played.
since I'm trying to have safe values for broadcast, which one do I follow, the video paused or the video playing?
thanks!
Luc

There are settings in the Preference panel (the wrench icon) for whether the scopes update during playback or only during pause/stop, as running them during playback does use significantly more horsepower while the playback is ragging your hardware out. Most folks leave the updating for "pause" in order to assure the smoothest playback. Some folks also have AMAZING systems and can run 6k with scopes on with full-rez playback without a hitch. Right.
Well, for the rest of us, update during pause is a wiser choice. Those figures/shapes will be accurate. Most clips tend to have a similar range through the clip ... if you've got a spot that suddenly jumps way high or low from the other parts of the same clip, well ... you might realistically need to sub-clip that bit and grade it by itself, rather than trying to mush everything into "legal".
Of course, there is also the effect available in primaries of "Legalize ... " ... which some folks love, and others say NEVER use. If used, it's a top-layer thing. As with Adobe programs, the lower layers feed "up" to the top layer, if you put it below other things they can change the total values.
Neil

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