split dataset for RDLC

Hi all,

I hope some1 can help.
Im having performance problems with a report that has like 1000 rows, each row has one image. The images have been smallest and less size but anyway it crashes because of memory. I have seen several solutions like put in job queue, extend the system page file... but before this:

this guy speaks about "split datasets"

https://dynamicsuser.net/nav/b/waldo/posts/outofmemoryexception-when-printing-an-rdlc-report

does any1 know how to "split" datasets?

thanks!