Lagging - Need to add text (copy & place) to a 50+ pages PDF

Hello everyone!

I need to add text on the same exact position on every page of documents that are around 50+ pages and 10/20mo.

I don't want to edit anything, just add new text on top of the actual PDF.

What I like about Acrobat is that you can "copy and place" like in Indesign.

My issue is that Acrobat is lagging A LOT when I click on Modify the PDF.

It's nearly unusable, even the scroll is lagging and it crashed too.

I think it's because the PDF mainly contains pictures and Acrobat is loading them or something.

Is there a way to simply add text without editing or lagging ?

Or maybe Acrobat isn't the best tool for this ?

Unfortunately InDesign doesn't open PDF documents and I don't have access to the original InDesign file.

Photoshop is a mess because I would need to open each page, add text, export and then merge 50 pages in one.

I tried "PDF Expert" software and it didn't lag at all when I modify the PDF, but there's no "option to copy and place" so it's not interesting for me.

I really don't know what to do and I have a bunch of huge pdf to edit.

Thank you in advance for your help!

_

Tom