try to figure out how ZeroGPU works

app.py

@@ -4,7 +4,8 @@ import spaces
 
 from run_model_downloader import download_models
 
-download_models()
+if not os.path.exists("Models/ToucanTTS_Meta/best.pt"):
+    download_models()
 import multiprocessing
 
 multiprocessing.set_start_method("spawn", force=True)