Eleven Ways to Update an Indicator from within a subVI. Their Relative Performances and Quite Far Reaching Consequences... in Application Design & Architecture Posted June 18 · Edited June 18 by shoneill · Report reply I my test (After setting all to disable debugging) User Events are second only to Queues and Notifiers. They're 20% faster than Channel (High Speed Stream). And Notifiers and User Events are very close in performance. Sometimes User Events win, other times Notifiers, depends on which other methods are running concurrently. This is in a VM with only 2 cores.