Our applications used Crystal Reports 8 and we have several .RPT files. Now we are starting to use Crystal Reports 11 and we've already converted almost all reports to CR11.

The strange thing is that some reports become veeeery slow just by changing it to CR11.

For example, I have a report that takes something around 5 seconds to load completely on screen, using the CR8 DLLs and the CR8 RPT format. If I just change the DLLs to CR11, or if I change the DLLs to CR11 and save the RPT into CR11 format, without changing a word in the report, it takes around 7 MINUTES to load completely on screen...!

Some of the reports have not slowed down when changed to CR11, some of the reports have slowed down a little, and some have slowed down a lot, like this one.

Does anybody knows what on earth could be causing this discrepancy?

A particularity from our reports is that almost all of them have a Fields-Definition-Only (.TTX) table as starting point. We do it this way 'cause we have a complex filter in the applications which would be difficulty to reproduce in every report.

Thanks in advance.