Have had an Instance of the Matrix “Synapse” Chat Server for two months now (instructions). The system operates alright, but in short, the User Interface for both the Android App and the Web Based user interface I found hasn’t been particularly fast… In fact, it feels a bit lethargic in a way akin to walking through a swamp.
Having said that, there is a new series of the server in development called “Dendrite” that promises to be faster with more optimal resource usage, but do not know when the developers are going to get around to formally releasing it to the public.
Will keep the current server up for now, but won’t be actively pushing or promoting it beyond family and a handful of friends. If people expressly mention that they are looking for an alternative, will mention it there and then along with my instance of Matrix/RIOT, but generally not before then.