I tested it again tonight. When using ES-AS-ES-ES, one tick was clipped 50% of the time (total number of trials:20). Range did not effect DoT clipping (10 trials at min range, 10 trials at max range). It looks for at least one
When using ES-ES-AS-ES, the results were much better. Clipping also occurred only around 25% of the time (ten trials), when at minimum range. Latency stayed below 50ms for all the tests.
So I'm not sure if this is just an internal issue with displaying ticks in the combat logs or actually an issue. It appears that if clipping does occur, ES-ES-AS-ES does do a better job of preventing the clips.