Help!!--Crystal Reports Performance

Hi..i want to generate a daily time record report (dtr) using vb.net and crystal reports...so what i did is i had my report bound to a dataset...then i used formula fields in crystal reports
to process the data from the dataset and display the results..i am actually displaying 4 formula fields and 3 others that are not formula-fields.

my problem is that it would take 15 - 25 seconds for the report to show up..
the report shows the dtr for 1300+ employees for a 15-day pay period.

is it normal?..considering 1300+ employees, 15 days each??

or is it slow???


ive been bothered by this for a week now..please help me..Thanks a lot :)