Hi Nilay

When you access properties from IPublishedContent or Modelsbuilder you are not accessing the raw data stored for that property.

Instead a 'PropertyValueConverter' is run (which is specific for each type of property) to return a helpful friendly object to use in your templates.

Your MemberPicker will be storing the unique id of the picked member, but your generated Model will be running that through a PropertyValueConverter to give you a representation of the picked item in a familiar shape, eg IPublishedContent - but I don't think Member data is fully stored in the PublishedCache, so might be hitting the database to get the full information of the picked member... to construct the IPublishedContent representation and it will be doing it for every descendant document!

But in this querying context you do not need the 'Member' representation in order to compare Ids...

... So I think you could work around this using the raw stored value for the property, which I think you can access like so:

var site2 = Model.Root();    
  var attendeesByUser = site2.Descendants<Attendee>().Where(x => x.GetProperty("member")..GetSourceValue() == currMemberId).OrderBy(x => x.StartDate);

where "member" is the alias of the picker...

... I think ... !

regards

Marc