diff --git a/comfy/ldm/seedvr/vae.py b/comfy/ldm/seedvr/vae.py
--- a/comfy/ldm/seedvr/vae.py
+++ b/comfy/ldm/seedvr/vae.py
@@
-    storage_device = vae_model.device
+    # Keep the full tiled accumulator on ComfyUI's intermediate device.  A
+    # multi-frame 2x decode can be several GiB even though each VAE tile fits
+    # comfortably on the GPU.
+    storage_device = comfy.model_management.intermediate_device()