PDF generation query

Hi,

We have functionality where we store a mapped pdf in AWS, then when we want to create a pdf with our own values, we read in the binary and use cfpdfform with action populate, then use cfpdfformparam to populate our values. This works fine but when we want to create a lot at the same time, we create them, add them to a directory then do a cfpdf action="merge" on that directory to get what we need. Dependant on the amount i'm getting timeouts if its anything around the 100 mark. Just wondering is there an alternative way of doing it. We're using CF2018. Is there anything in more recent releases which make life easier with pdf generation?

Thanks