Make Data Previews Sampled by default when editing drill layers in Analyzer

MichelleH

When I'm editing a drill layer on a card, Analyzer tends to be less responsive due the granularity and lack of filters in the drill. Often times I need to change the data preview from All Rows to a Sampled view so that navigate through Analyzer without a significant lag. It would be helpful if drill layers generated previews using sampled data by default to avoid this problem.