perf: reduce prompt relay and audio ui overhead

patches.py

@@ -1,9 +1,12 @@
-import logging
-import types
-
-import comfy.ldm.modules.attention
-
-log = logging.getLogger(__name__)
+import logging
+import os
+import types
+
+import comfy.ldm.modules.attention
+
+log = logging.getLogger(__name__)
+_DEBUG_PROMPT_RELAY = os.environ.get("PROMPT_RELAY_DEBUG", "").strip().lower() in {"1", "true", "yes", "on"}
+_DEBUG_LOG_PATH = os.path.join(os.path.dirname(__file__), "debug_prompt_relay.log")
 
 
 def _masked_attention(q, k, v, heads, mask, transformer_options={}, **kwargs):
@@ -72,14 +75,14 @@ def _make_masked_override(prev_override):
     return override
 
 
-def debug_log(msg):
-    try:
-        import os
-        log_path = os.path.join(os.path.dirname(__file__), "debug_prompt_relay.log")
-        with open(log_path, "a", encoding="utf-8") as f:
-            f.write(msg + "\n")
-    except Exception:
-        pass
+def debug_log(msg):
+    if not _DEBUG_PROMPT_RELAY:
+        return
+    try:
+        with open(_DEBUG_LOG_PATH, "a", encoding="utf-8") as f:
+            f.write(msg + "\n")
+    except Exception:
+        pass
 
 
 def _make_ltx_mask_wrapper(underlying, mask_fn, attr):