Confirmed you're correct. The update frequency is used in only one place (line 191 in EntityTrackerEntry) where the code to decide to send update has the condition: if (this.updateCounter % this.updateFrequency == 0 || this.trackedEntity.isAirBorne || this.trackedEntity.getDataManager().isDirty())   Note the isAirBorne check. So I guess the idea is that projectiles are covered with that?   To fully understand how things are updated, it seems most of the code is in t