Help with large repeating data nodes in source xml file

Helloo

I am merging a dynamic ES2 xdp with xml file. There is a row repeating in a table in my form and similarly there are repeating data nodes in the source xml. There are 1700 data nodes in xml file which lead to creation of 1700 rows in the table of my form. Merging/Rendering for this form with xml file takes more than 10 minutes.

Is there any way that I could improve form opening time? OR is there any upper limit in terms of number repeating data nodes to have in source xml file?

Need urgent help.

Thanks

Satya