diff --git a/scripts/pod/start-comfyui.sh b/scripts/pod/start-comfyui.sh
index 161b5d9..79d715e 100755
--- a/scripts/pod/start-comfyui.sh
+++ b/scripts/pod/start-comfyui.sh
@@ -7,6 +7,8 @@
 set -euo pipefail
 
 LOG=/workspace/minimax-h3/comfyui-$(hostname).log
+# reduce near-limit CUDA OOMs from fragmentation (community-verified for H3)
+export PYTORCH_CUDA_ALLOC_CONF=${PYTORCH_CUDA_ALLOC_CONF:-expandable_segments:True}
 mkdir -p /workspace/minimax-h3/output
 ARGS=${COMFY_ARGS:-}