Adobe Acrobat PDF Reader, slow

“go to preferences, select “reading”, at the top of that page select “Do not read documents”

check print spooler and drivers

https://community.adobe.com/t5/acrobat-discussions/how-to-actually-turn-off-auto-ocr-or-i-truly-despise-performing-page-recognition-automatic-ocr/m-p/14196524/page/2