Collecting setup feedback - is this based on time or number of laps on the track?

When collecting setup feedback during practice sessions, is the speed of collecting feedback based on the time on the track or number of laps, or distance travelled? That is, if I were to encourage my drivers to lap more quickly or drive further within a set time, at the expense of tyres and the condition of parts, would I collect setup feedback more quickly, or is it simply the amount of time out on the track, irrespective of the number of laps or the distance travelled?
 
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