Ability to disable processing messages and events in muted rooms and load them only on demand

[MurzNN]

Many Riot users have joined to large active rooms (like Matrix HQ) in Mute mode, because they need to talk in them very rarely, but sometimes want to look few last messages, so every time leave and join that rooms is not good way.

At now Riot receives all messages from all rooms, even from muted rooms, so it spend unnecessary memory and cpu time for processing those messages.

Will be good to have option to disable processing muted messages in local Riot instance - not show notifications and not add them into Riot app memory. And load event history of those rooms only on demand, when user manually open this room.

Even if server will continue sending messages from muted rooms to client - we can ignore processing if detect that this message is for muted room.

[MurzNN]

Seems we can implement filtering of muted rooms in /sync action via filling not_rooms string using RoomFilter, and sync them only via per-room basis on demand (when user opens needed room)?

For not broke previous behavior, this mode can be optionally, included in some Low bandwidth mode group.

If we need to stay bold style on muted rooms with new unread messages, we can include in not_rooms only already bold rooms.

[progserega]

Yes - it is nice behavior: skip sync for already bold rooms. Bold - tell user that muted room have new unread messages, but if user not want read this room - it is skip from sync. And sync this room, if user enter to this "bold room".