Element-android: Improve performance, especially on timeline

[bmarty]

RiotX may suffer from ANR after several navigations between rooms.

Also it consumes too much RAM. Let's see how we can improve that.

Several ideas:

• [ ] fix memory leaks if any
• [ ] use another Adapter for the timeline, Epoxy is not well adapted to infinite list
• [ ] explore new things from latest Jetpack release: https://www.youtube.com/watch?v=R3caBPj-6Sg&list=WL&index=27&t=0s and https://medium.com/androiddevelopers/whats-new-in-jetpack-1891d205e136

[resynth1943]

Does this mean sending a message isn't going to mean I have to wait 3 seconds for it to actually appear in the chat?

For example, when I send a message, this happens:

• the input bar clears
• three seconds pass
• the message shows up in the chat, grayed out
• 5 seconds later, the message actually sends

I don't have to explain how bad this is in terms of UX. The message shouldn't take 2 seconds to be visible in the chat. In fact, I have actually found the older app to be faster than the newer variant, and my friends have confirmed there is a night and day difference between the two.

[resynth1943]

Oh, by the way. I figured this would help: if you want to fix the insane slow down when a message is sent, check out the Markdown renderer. After disabling Markdown support, it's a lot snappier.

Hope this helped.

[Thatoo]

RiotX v 0.22 became really slow on my phone (Nexus 5) whereas I couldn't complain with previous RiotX version.
I hope it will improve again.

[cloudrac3r]

For the record, I also experience the _exact_ same thing resynth experienced, with almost identical timings. Force stopping element and opening it again makes it a little faster to send, but as I continue to use the app it gets worse again.

With the old riot app, which I still have installed, messages send basically instantly.

However, changing the markdown formatting setting in element did not help me.

Element: im.vector.app 1.0.5.