Issues with slow rendering. Pages stay white for too long.

I initially thought this was an issue with S3 but then I found that local files have the same issue. It only occurs with PDFs where we've added ocr text. We use a tool called pymupdf. The PDF works fine with all other viewers that I've tried, but the Adobe Embed viewer has a really hard time opening them. They eventually open, but it takes much too long. Something is wrong.

Here is a link to the PDF with the text layer:  https://drive.google.com/file/d/1MRqIAN56tgG5FotNhU6r_p22RnB0ag5B/view?usp=sharing
And the same PDF without: https://drive.google.com/file/d/1z91UcQTcnjqu3u4ysQ1rPCYljfkK322l/view?usp=sharing

Files are also attached.