Since the version number you provided (v20.8.4.2) is from late 2021/early 2022, this review focuses on that specific era of the software (FL Studio 20), while acknowledging its position relative to the current FL Studio 21 release.
Navigate to Options > Audio Settings. Select your ASIO driver (e.g., "Focusrite USB ASIO"). Set the Buffer Length to 256 samples for recording (low latency) or 1024 samples for mixing (high CPU headroom). This version handles buffer switching without rebooting the DAW, a massive workflow improvement. Image-Line FL Studio Producer Edition v20.8.4.2...
Audio Recording: The ability to record external microphones and instruments directly into the playlist. Since the version number you provided (v20
Improved clip merging and "right-click to delete" initialized controls. Piano Roll Preview: You can now preview notes by clicking them during playback. Producer Edition vs. Other Versions Producer Edition Fruity Edition Audio Recording Full capability Audio Clips Limited to 8 Stock Plugins Fewer essentials Editing Tools Edison, Slicex, Maximus Basic only Should You Buy FL Studio? The Pros And Cons Of FL Studio Film Composers: It lacks the advanced video syncing
The 20.8 series brought significant upgrades to the mixing and sound design workflow:
Full Audio Recording & Stem Manipulation: Record vocals, guitars, or hardware synths directly into the playlist.