Getting back to the topic at hand, upon closer examination I noticed problems with the original code relating to error propagation.
If whatever code you replace the placeholder with returns an error, the notifier will not signal, meaning when an error occurs the VI will always wait the delay before returning even if the error occurs immediately. Consider wiring either the notifier refnum or the boolean from the sequence frame to force execution order instead of the error cluster. Similarly you probably always want the FP to be closed, so the error should not propagate to the invoke node: