BW Documents Settings

Hi,

I have an ABAP program which creates hundreds of BW documents per day. Testing the program in the test system had good performance. When the program was run in production, the performance was about 10 times WORSE. This was the first time we programmatically created BW documents. The program in production runs in the middle of the night when nothing else is running. Can anyone suggest settings that might cause the slowness?

Thanks.