Tracking: Performance & Architecture

[nplasterer]

• quick scrolling on conversation list view shows blank spaces
• react hooks called too many times when it’s not necessary (useless rerenders)
• initial loading time of the app (loading the sqlite db data into the app state, while the splash screen is shown)
• initial sync (while the activity indicator is shown) time improvement (when we only use v3 so when 1:1 has been migrated)
• overlapping messages, jumpy scroll & flash list improvements (long list of items of varying height
• overall perf, especially on older android devices, due to RN (try the new architecture in the next Expo version and see what breaks)
• message cell rendering performance (including regex to parse content / unfurl frames)
• frames rendering & caching (already implemented but could be improved?) #807