I've made a PriceList module for my costumers and found it work very slow. The products I'm importing from the DB have many properties (about 30 mainly double, decimal and Guid). While debugging I've found that the bottleneck is the CBO.FillCollection<Product>() method.
    Further investigation into the code of the method revealed that the method works using a very comperhensive error detecting and uses 2 Try...Catch blocks, which leads to performance drawback.
    Changing of the CBO object can lead to broken code. Thus, in my opinoin the new versions of DNN should contain a fast object CBO2 which have no any Try...Catch blocks and works with an assumption that the types of the fields in the DataReader and the properties in the specified type are the same (except for DBNull).

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Best regards, Evgeny