It seems to me that when this event started in Waterloo a number of years ago, the buskers did full performances. But now they all seem to have about one minute worth of material to fill up 20 minutes of routine. I get that they want to do some patter to attract a big crowd, but it needs to be better patter. Or more tricks. Or a better split between filler and performance. Pulleeze.
(As Carrie Fisher said, "Instant gratification? Instant gratification takes too long!")