Focused on find some performance related problems.

Tracing on attached screens showing relative performance different (because was made on debug build). Video was made on release builds.

[Fix] avoided remeasuring layouts hierarchy when user interact with sticker on photo screen
https://github.com/landarskiy/Telegram/commit/6178a7087cccbe6e791953a023a86e55de8a06b4

On attaches: frame times (before/after fix) on add stickers to photo screen.

[Fix] avoided overdraws when translation not changed
https://github.com/landarskiy/Telegram/commit/47e273811e37fd752cc372152b51d267ebc273f4

On attaches: redraws detecting.

[Fix] improve TimerView performance (move calculation operations to another thread (may be sensitive for low performance devices while user record audio and browse chat)

On attaches: some relative results (on trace screenshot much more informative, on video - not visible difference)

Wow! This is tough, like such over-drawcall hunting :)

Good job :)

Cool

These performance problems are not visible to user, but nice job fixing them. Good luck

Всего исправлений: 3
Из них корректных: 3

Все предложенные оптимизации корректно внедрены в приложение. Количество реализованных изменений не позволило продвинуть работу на более высокое призовое место.