Slow filling data (no replies)

Why filling in data when using MySQL Connector/Net works 10-20 times slower than when using a ODBC connector OdbcDataAdapter Fill()? The body of the query or stored procedure is the same.
This effect is observed when using the methods MySqlDataAdapter Fill() and DataTable Load() from MySqlDataReader.
Version of Connector/Net - 6.9.1
Version of Connector ODBC - 5.1
None of the recommendations that I found on the Internet affect this in any way. For example, DataSet property EnforceConstraints = false and DataTable methods
BeginLoadData() and EndLoadData().