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