Audio scrubbing—playing audio while dragging the playhead—was a feature prioritized in this build. Previous iterations often desynchronized audio from the timeline, making lip-sync and rhythm-based animation difficult. PR4 addressed this by buffering audio streams more efficiently, ensuring that the visual frame rate remains consistent with the audio playback rate.

A major focus of the "20" series is usability. Prerelease 4 continues to polish the User Interface (UI).

The primary focus of Pre-release 4 (Phase 1) was optimizing the software's new C++ foundation, which resulted in significant speed gains over older versions like 1.2.9:

The technical upgrades in this version are substantial, particularly for creators working on large-scale projects:

Pre-release 4 addressed several critical issues that impacted early 2.0 testers:

: Addressed a major recording issue that prevented users from capturing the Mine-imator window using OBS Studio or Discord.