Performance

Some users have noticed that current versions of OCRmyPDF do not run as quickly as some older versions (specifically 6.x and older). This is because OCRmyPDF added image optimization as a postprocessing step, and it is enabled by default.

Speed

If running OCRmyPDF quickly is your main goal, you can use settings such as:

--optimize 0 to disable file size optimization
--output-type pdf to disable PDF/A generation
--fast-web-view 999999 to disable fast web view optimization
--skip-big to skip large images, if some pages have large images

You can also avoid:

--force-ocr
Image preprocessing