Increase GPU duration for score_and_create_matrix_all_singles to enhance performance; implement fallback to CPU mode on failure

app.py

@@ -730,7 +730,7 @@ def score_and_create_matrix_all_singles_impl(sequence,mutation_range_start=None,
 # Apply Zero GPU decorator if available
 if SPACES_AVAILABLE:
     try:
-        score_and_create_matrix_all_singles = spaces.GPU(duration=300)(score_and_create_matrix_all_singles_impl)
+        score_and_create_matrix_all_singles = spaces.GPU(duration=420)(score_and_create_matrix_all_singles_impl)
     except Exception as e:
         print(f"Warning: Could not apply Zero GPU decorator: {e}")
         print("Falling back to CPU mode")