Ubisoft has released a side-by-side comparison video showcasing the visual differences between the original PlayStation 4 version and the upcoming PS5 Pro Remake of Assassin’s Creed IV: Black Flag, now titled Assassin’s Creed Black Flag RE:Sync. The footage highlights significant upgrades in texture resolution, lighting, and frame rate stability designed to leverage the enhanced hardware of the PlayStation 5 Pro.
The comparison video serves as a technical preview for players ahead of the release, focusing on the “RE:Sync” version’s ability to maintain higher fidelity during intensive naval combat and dense urban environments. According to the footage, the PS5 Pro Remake implements advanced upscaling and improved draw distances that were not possible on the PS4 hardware from a decade ago.
As a software engineer and tech editor, I recognize that the jump from the PS4’s Jaguar architecture to the PS5 Pro’s specialized GPU represents more than just a resolution bump. The RE:Sync version specifically targets the “bottlenecks” found in the original 2013-era engine, aiming for a consistent 60 frames per second (fps) at 4K resolution, a feat the original console struggled to achieve even at lower settings.
Technical Enhancements in Assassin’s Creed Black Flag RE:Sync
The primary focus of the RE:Sync remake is the integration of PSSR (PlayStation Spectral Super Resolution), Sony’s AI-driven upscaling technology. According to official technical specifications for the PlayStation 5 Pro, this technology allows the console to deliver high-fidelity images without the significant performance hit usually associated with native 4K rendering.
In the comparison video, the difference is most evident in the water physics and environmental foliage. The PS4 version exhibits noticeable “pop-in” (where objects suddenly appear as the player moves) and lower-resolution textures on the ship’s sails and character clothing. In contrast, the PS5 Pro Remake displays stable, high-detail assets and more complex wave simulations, reducing the visual shimmering often seen in the original version’s ocean rendering.
Lighting is another critical area of improvement. The RE:Sync version utilizes updated shaders to create more realistic sunlight filtering through jungle canopies and more accurate reflections on the water’s surface. While the PS4 version relied on static baked lighting for many scenes, the PS5 Pro version introduces more dynamic light sources that react to the time of day and weather conditions in real-time.
Comparing PS4 Original vs. PS5 Pro Remake
The disparity between the two versions is most striking during the game’s signature naval battles. On the PS4, heavy combat involving multiple ships and smoke effects often led to frame rate drops, occasionally dipping below 30 fps. The PS5 Pro Remake maintains a locked high frame rate, ensuring that the fast-paced action remains fluid.
Below is a breakdown of the verified technical shifts observed between the two versions:
| Feature | PS4 Original | PS5 Pro Remake (RE:Sync) |
|---|---|---|
| Target Resolution | 1080p (Variable) | 4K (via PSSR Upscaling) |
| Frame Rate | 30 fps (Unstable) | 60 fps (Targeted/Stable) |
| Texture Detail | Standard HD | High-Resolution Remastered |
| Draw Distance | Limited (Visible Pop-in) | Extended (Seamless Loading) |
The “RE:Sync” branding suggests a synchronization of the game’s legacy assets with modern hardware capabilities. This process involves not just upscaling, but “remastering” specific assets to ensure they don’t look blurry when viewed on 4K OLED screens. For example, the facial animations of Edward Kenway show increased polygon counts and better skin shaders in the Remake, reducing the “plastic” look of the original characters.
Impact on Gameplay and Player Experience
While the core gameplay mechanics of Assassin’s Creed IV remain unchanged, the technical overhead of the PS5 Pro allows for a more immersive experience. The removal of stuttering during transitions between the open sea and land-based stealth missions eliminates a major friction point from the original PS4 experience.
Industry analysts note that remakes of this nature are designed to introduce a legacy title to a new generation of players who expect a baseline of 60 fps and 4K visuals. By utilizing the PS5 Pro’s increased GPU compute units, Ubisoft is effectively bridging the gap between a 2013 design and 2024 hardware standards.
For existing owners of the original game, the RE:Sync version offers a way to experience the Caribbean setting with modern clarity. The improved visibility—specifically the ability to spot enemy ships from a greater distance due to the increased draw distance—provides a subtle but tangible advantage in naval navigation and combat strategy.
The next confirmed step for the title is the official global rollout across supported regions. Players can monitor the official Ubisoft and PlayStation Store pages for specific regional release dates and pricing tiers for the RE:Sync upgrade.
Do you think the jump to PS5 Pro justifies a remake of a decade-old title? Share your thoughts in the comments below.