The memory address SkyrimSE.exe+D6DDDA is a common indicator of a crash related to system memory management or corrupt assets (textures/meshes) in The Elder Scrolls V: Skyrim Special Edition Primary Fix: Increase Windows Pagefile Size
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The "Power of 2" Rule: A common cause for D6DDDA is a texture whose resolution is not a power of 2 (e.g., 1024x1024) or a multiple of 4. skyrimseexe d6ddda top
Verify executable integrity (Steam)