Lock YuE to a 16GB Comfy-safe recipe instead of chasing single knobs.

Keep mmgp profile 2 (no quanto), node-legal token floor, two Stage-A segments, and document why profiles 3-5 blow up under InferenceMode.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/utils/musicWorkflow.ts

@@ -116,15 +116,26 @@ function buildYueWorkflow(params: MusicWorkflowParams): WorkflowGraph {
   const prefix = params.filenamePrefix || musicFilenamePrefix()
   const tags = params.tags
   const lyrics = params.lyrics || '[instrumental]\n'
-  // 5080 16GB OOMs past ~3 long Stage-A segments on fp16+mmgp. Cap hard.
+  // Beast 5080 16GB recipe (keep in sync with workflow_yue.json):
+  // - mmgp profile 2 only (3–5 enable quanto and crash under Comfy InferenceMode)
+  // - max 2 Stage-A segments (3+ OOMs)
+  // - max_new_tokens floor is 2944 (node min); do not go lower
+  // - Triton/torch.compile off on Windows
   const sections = lyrics.split(/\[[^\]]+\]/g).filter(part => part.trim()).length || 2
   const segments = Math.max(1, Math.min(2, sections))
   for (const node of Object.values(graph)) {
     if (node.class_type === 'YUE_Stage_A_Loader') {
       node.inputs.stage_A_repo = yueStageARepo()
+      node.inputs.quantization_model = 'fp16'
+      node.inputs.use_mmgp = true
+      node.inputs.stage1_cache_size = 8192
+      node.inputs.mmgp_profile = 2
     }
     if (node.class_type === 'YUE_Stage_B_Loader') {
       node.inputs.stage_B_repo = yueStageBRepo()
+      node.inputs.use_mmgp = true
+      node.inputs.stage2_cache_size = 4096
+      node.inputs.stage2_batch_size = 1
     }
     if (node.class_type === 'YUE_Stage_A_Sampler') {
       node.inputs.genres_prompt = tags.replace(/,/g, ' ').replace(/\s+/g, ' ').trim()
@@ -133,6 +144,10 @@ function buildYueWorkflow(params: MusicWorkflowParams): WorkflowGraph {
       node.inputs.prompt_end_time = Math.min(params.duration, 45)
       node.inputs.run_n_segment = segments
       node.inputs.max_new_tokens = 2944
+      node.inputs.use_dual_tracks_prompt = false
+      node.inputs.use_audio_prompt = false
+      node.inputs.offload_model = true
+      node.inputs.stage1_no_guidance = true
     }
   }
   applyPrefix(graph, prefix)