Adobe SDK - CreateTextSelect

We recently upgraded from Adobe Acrobat 7 Professional to Adobe Acrobat 2020 Pro. We are using CreateTextSelect and the GetText method to extract text value from the pdfs . We noticed this part in our solution that gets the text is slower in 2020. In Acrobat 7 it takes 300ms per pdf and 700+ ms in 2020. I know that does not sound like a huge difference but working with 100 000+ pdf’s it does cause huge delay in our production environment. What would cause this or any suggestions on what we can do to make it the same speed as Adobe Acrobat 7?