It supports the older version of the Skyrim Script Extender (SKSE64 v2.0.20) , which is required for many complex mods that haven't been updated for the newer 1.6+ "Anniversary" builds.
Given the complexities, the decision to use version 1.5.97 depends largely on your modding goals:
Infinite loading screen (ILS) on saves. Solution: You are missing the SSE Engine Fixes (Part 2) DLL. Ensure you placed the EngineFixes.dll and EngineFixes_preload.txt in Data/SKSE/Plugins/ .
: It features native volumetric lighting (god rays), improved snow shaders, and dynamic depth of field. Vibrant Landscapes The Elder Scrolls V Skyrim Special Edition V1.5.97.0
What or handheld device (like Steam Deck) are you using?
Upon its release in 2016, SSE's version number began at 1.0. Over the next three years, Bethesda released patches to fix bugs and make minor adjustments. This period of refinement culminated in 2019 with the release of . For two years, this was the latest and greatest version of the Special Edition, and it quickly became the bedrock upon which the modern Skyrim modding scene was built.
Are you planning to build a or use a Wabbitjack modlist pack ? It supports the older version of the Skyrim
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: Bethesda updated the Visual Studio compiler used to build the game. This altered the underlying code structure fundamentally.
You must download the "All-in-one (Special Edition)" pack rather than the Anniversary Edition version. Ensure you placed the EngineFixes
: Using a downgrader allows players to keep the technical stability of 1.5.97.0 while still utilizing the new content (quests, armor, etc.) added by the Anniversary Edition. Key Features of the SSE 64-bit Engine
: Certain foundational mods, like No Grass In Objects (NGIO) , which allows for grass LOD generation, are exclusive to 1.5.97.0.
For years, developers created complex mods specifically tailored to this version's executable file. Because it remained unchanged for an extended period, it allowed the modding ecosystem to mature and achieve unprecedented stability. The Modding Lifecycle and SKSE
When the Anniversary Edition dropped, thousands of mods instantly stopped working. While many authors updated their mods, many others have retired from the scene. Their mods—some of which are considered "essential" by many—only work on the pre-AE executable. By staying on V1.5.97.0, you ensure access to the widest possible library of classic mods.
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