Guide :: Revert SSE to version 1.6.640 or 1.6.1130 - Steam Community
: This was a major "Anniversary Edition" (AE) build released around September 2022. While newer versions like 1.6.1170 now exist, 1.6.640 remains a popular "gold standard" for modding because of its stable compatibility with specific versions of the Skyrim Script Extender (SKSE64) (specifically version 2.2.1). Guide :: Revert SSE to version 1
: Many players use the Skyrim Downgrade Patcher to revert their game from newer, "broken" versions back to 1.6.640 to ensure their complex mod lists continue to function. as the code structure differs significantly.
: If you are using this file, ensure your mods are labeled for "AE" or "1.6.x" rather than the older "SE" (1.5.97) versions, as the code structure differs significantly. Guide :: Revert SSE to version 1