RTX 5080 slower in PC than as eGPU due to Shared VRAM usage?
ReallyLoveRails · reddit · 2026-08-30
User reports RTX 5080 performs slower in a PC desktop than as a Thunderbolt 4 eGPU for ComfyUI. The difference is 30-45s per job. The PC build uses 'Shared VRAM' while the eGPU setup did not. User seeks a way to disable shared VRAM on Windows 11.
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