Assets seem to reload when switching rooms

[scoates]

When I switch away from a room and switch back, the assets in that room (inline photos; maybe even avatars—not sure) seem to reload. This is jarring, slow, and wasteful of network traffic (if it's actually reloading from the homeserver—not sure about this either). We should probably do some level of caching either at the network layer or at the room layer.

(I recognize caching is a bigger issue, and premature optimization is bad, but there's probably some early low-hanging fruit here.)

[viktorstrate]

I think caching to a certain extend is (or should be) handled by matrix-rust-sdk. We need to better understand this however. Maybe we can look at what Element X does.

[viktorstrate]

Just a note so I don't forget, if we are to implement this ourseles then NSCache would be interesting to look into.