Final Fantasy Xv- Windows Edition -v1138403 A... -

Final Fantasy XV: Windows Edition - v1138403 – The Definitive Technical Deep Dive and Performance Analysis

By: [Author Name] | Category: PC Gaming, Patches & Builds

When Final Fantasy XV: Windows Edition first stormed onto PC platforms in March 2018, it was hailed as a technical marvel—and a hardware crusher. But for the dedicated PC gaming community, the chase has never just been about playing the game; it has been about chasing the perfect build. Over the years, Square Enix has rolled out multiple updates, but one specific build number has recently resurfaced in community discussions as a point of reference for stability, mod compatibility, and performance: Final Fantasy XV- Windows Edition -v1138403 A...

This article dissects everything you need to know about this specific version, from its internal changelog to how it compares with later builds, and whether you should consider rolling back to it in 2025. Final Fantasy XV- Windows Edition -v1138403 A...

3. Content Completeness (The "Royal Pack" Integration)

Version v1138403 includes the content that console players had to purchase separately as DLC.

  • Expanded Insomnia Ruins: The final chapter of the game is significantly reworked. Instead of a linear hallway leading to the final boss, the ruined city of Insomnia is now an explorable open zone with new enemies, side quests, and bosses (including the Cerberus and Omega Weapon fights).
  • New Boss Encounters: The timeline alterations allow for battles against the "Kings of Yore," providing a deeper lore experience before the final confrontation.

2. Mod Compatibility Heaven

The FFXV modding scene, though never reaching Skyrim levels, thrived on v1138403. Key mods like: Final Fantasy XV: Windows Edition - v1138403 –

  • Flagrum (mod manager)
  • Moogle & Chocobo Model Swaps
  • Noctis Caelum Custom Outfits
  • Harder Difficulty & Enemy Spawn Mods
  • Weapon stat editors all explicitly target v1138403. Later Windows updates (especially the Microsoft Store version) broke archive access.

6. How to Acquire & Lock v1138403 A

If you already own Final Fantasy XV: Windows Edition on Steam, rollback is possible (though unsupported by Square Enix).

  1. Open Steam Console (steam://nav/console).
  2. Type: download_depot 637650 637651 8143748669363479535 (Note: This manifest corresponds to v1138403 A)
  3. Wait for the 85GB download (plus optional 65GB 4K pack).
  4. Replace your current FFXV_S.exe with the depot version.
  5. Set your appmanifest_637650.acf to "StateFlags" "4" (Read-only).

Warning: Steam will try to re-update the game immediately. Disable auto-updates for this specific title in your library. Expanded Insomnia Ruins: The final chapter of the

2. Performance Benchmarks: The “Sweet Spot” Build

Why are PC enthusiasts clinging to v1138403? The answer lies in the TurfEffects and ShadowLibs implementation.

In earlier builds (v1.2.x), turning on NVIDIA’s GameWorks features—specifically HairWorks and TurfEffects—would tank framerates by 40% on GTX 1080 Ti cards. By v1138403, the developers had finally decoupled the heavy GPU particle physics from the main rendering thread.

Diagnostics and Logging — What to Collect Before Reporting

Collect these items to make bug reports actionable:

  • Exact game executable version/build string (from file properties) and Steam/App ID.
  • Platform (Windows 10/11) and full OS build number.
  • GPU model and driver version (use device manager or GPU control panel).
  • CPU model, RAM amount.
  • Full steps to reproduce the issue; repeatable steps are essential.
  • Crash logs: Event Viewer Application errors, game-generated logs (check %LOCALAPPDATA% or game install folder).
  • Screenshots and short video of the issue, plus a trimmed performance log (MSI Afterburner/RTSS).
  • If the problem is new after a specific build/update, note the prior working build and what changed.