Question:

How to disable\enable "Automatic proofread results after OCR?

Answer:

Open PowerPDF > File > Options > Document > Searchable PDF Document

Unselect "Automatic proofread results after OCR" > OK

The registry location is HKEY_CURRENT_USER\Software\Nuance\PDF\V1

Locate "Proofreader"

0 = Off

1 = On