Skyrim Special Edition (SSE) is widely considered the "gold standard" for modding because it remains compatible with critical, high-performance mods that were never updated for later "Anniversary Edition" (v1.6+) versions. Why Stick to Version 1.5.97? Mod Compatibility

To follow, the Dragonborn must enter Sovngarde itself. The only portal is Skuldafn, a hidden dragon temple guarded by Alduin’s lieutenants. With the help of the mage Arniel Gane (College of Winterhold side quest) or simply by allying with the Blades, the player secures passage via Odahviing—a red dragon bent to their will by a show of strength.

fixed all of that. By shifting the game engine from 32-bit to 64-bit architecture, v15970 can utilize all of your modern system’s RAM and VRAM. What does this mean for you?

It was the latest version for over two years, allowing the modding ecosystem to reach a highly polished and stable state.