Update app.py

app.py

@@ -84,7 +84,7 @@ if torch.cuda.is_available():
         torch_dtype=torch.float16,
         use_safetensors=True,
     )
-    pipe_xl_lightning.scheduler = DPMSolverSinglestepScheduler.from_config(pipe_xl_lightning.scheduler.config, use_karras_sigmas=False, timestep_spacing="trailing")
+    pipe_xl_lightning.scheduler = DPMSolverSinglestepScheduler.from_config(pipe_xl_lightning.scheduler.config, use_karras_sigmas=False, timestep_spacing="trailing", lower_order_final=True)
     pipe_xl_lightning.to(device)
 
     print("Loaded on Device!")