MongoDB Atlas Change Stream into AWS

Hi Drew, thanks for your answer!
I am using a shared cluster in the same region as my AWS application (AWS Frankfurt). So i guess also the realm app will be in the same application for the triggers. One trigger requests completes within 300-400ms.
300-400 ms for one change event feels wrong to me, especially when we assume it is all in the same location. Has this also something to do because we are using the shared cluster? Would a dedicated cluster change anything about this?