ReportDocument.Load（） 加载时间过长。c#.net 中的 RPT 文件

问：

ReportDocument cryRpt = new ReportDocument();

SqlCommand MyCommand = new SqlCommand();

SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder(cn.ConnectionString);
ConnectionInfo crConnectionInfo = new ConnectionInfo();

TableLogOnInfo crtableLogoninfo = new TableLogOnInfo();
string mtmptbl = "TmpAccountReport";

string qrySelBalanceSheet = "select * from tbl_TmpLedgerReport " + System.Environment.NewLine;

MyCommand = new SqlCommand(qrySelBalanceSheet, cn);
MyCommand.CommandType = CommandType.Text;

cn.Open();
MyCommand.ExecuteNonQuery();
cn.Close();

crystalReportViewer1.RefreshReport();
string crReportPath = Application.StartupPath.Replace("bin\\Release", "") + "\\Report";
cryRpt.Load(crReportPath + "\\LedgerAccountReport.rpt");

builder.ConnectionString = System.Configuration.ConfigurationSettings.AppSettings["con"];
string dbName = builder.InitialCatalog;
string dbDataSource = builder.DataSource;
string userID = builder.UserID;
string pass = builder.Password;
crConnectionInfo.ServerName = dbDataSource;
crConnectionInfo.DatabaseName = dbName;
crConnectionInfo.UserID = userID;
crConnectionInfo.Password = pass;

Tables Crtables;

Crtables = cryRpt.Database.Tables;

foreach (CrystalDecisions.CrystalReports.Engine.Table CrTable in Crtables)
{
    crtableLogoninfo = CrTable.LogOnInfo;
    crtableLogoninfo.ConnectionInfo = crConnectionInfo;
    CrTable.ApplyLogOnInfo(crtableLogoninfo);
}

crystalReportViewer1.ReportSource = cryRpt;                

根据我的代码，我通过 C# 中的 sap crystal report 显示报告。现在，在某个时间点，我的代码在这一行卡住了 2-3 分钟

cryRpt.Load(crReportPath + "\\LedgerAccountReport.rpt");

（我通过调试代码看到）并且从中加载报告需要更多时间。

令人惊讶的是，这种情况有时只发生在工作之间。

有什么想法可以解决这个问题吗？