While the SKSE team and major modders (like powerofthree, author of Spell Perk Item Distributor ) have updated to 1.6.x, a dedicated cadre of mod authors only work on 1.5.97. Furthermore, new mods are still being released with both versions. As long as the "Address Library for SKSE Plugins" maintains its 1.5.97 branch, the scene will survive.
The author of USSEP, Arthmoor, generally does not support older versions of Skyrim. When you visit the USSEP Nexus page , the "Main File" is always designed for the latest version of the game. skyrim ussep 1.5.97
For a "pure" 1.5.97 installation—meaning you have downgraded both your executable (.exe) and your data files (.esm/.bsa)— is the definitive requirement. While the SKSE team and major modders (like
. This was the stable ground upon which the modding community built its greatest works—until the "Great Shattering" of November 2021 changed everything. The Golden Age of 1.5.97 For two years, Skyrim Special Edition (SSE) rested at version 1.5.97 The author of USSEP, Arthmoor, generally does not