No, actually, faster reading often helps with better retention.

Also, taking notes, marking up a text etc are in my opinion a waste of time. If the author did his job right you should be marking up 100% of the words, and when taking notes you should be copying the book almost verbatim.

If you absolutely need to have a high recall, I recommend to start with a recital based approach. Read a section, then try to recite the topic freely. This works well for complicated or information-dense stuff. Less well for fluffy prose. If you want to go a step further, use loci-method with the latter approach.

Also, being interested in more effective learning techniques is highly correlated with diagnosed/undiagnosed ADHD. Just sayin'