Forge Neo / reForge / SD WebUI - Constant GitHub Login Loops and Extension Errors (RTX 5080 / Ryzen 9800X3D)

Hi everyone, I’m reaching out because I’ve hit a wall with my Stable Diffusion setup via Stability Matrix on Windows 11 Pro. Despite running a high-end system ( NVIDIA GeForce RTX 5080 16GB and AMD Ryzen 7 9800X3D ), I cannot get extensions (especially Video/SVD) to work across any version I try. Versions I’ve tested so far: Stable Diffusion WebUI Forge (Neo): Current main version. Stable Diffusion WebUI reForge: Tested and encountered similar issues. Stable Diffusion WebUI (Standard): Also tested.