Reader
This is an RSVP (Rapid Serial Visual Presentation) speed reader. Words flash one at a time; the red letter marks the optimal recognition point your eye should rest on, letting your brain register the whole word at once.
The biggest gains come from suppressing subvocalization — the inner voice that tries to pronounce each word as you read. Let that go. Trust your eyes to take in the word directly without sounding it out, and comprehension follows naturally at speeds that feel impossible when reading aloud internally.