In Telegram, I can open a chat, find a sticker, send a sticker, post a circle story, and shitpost in another group chat. All while WhatsApp loads my chat history. That is on any platform and any network condition, except for fully offline.

Their desktop apps are just Qt and not WebView inside a Qt. Mobile apps are native and not React.

The main things that are slow are loading the app and opening the app, loading the messages, and receiving the messages. On my phone, this is much slower than Telegram, and on my computer, the WhatsApp program doesn't even work have the time -- it just gets stuck in the loading process.

Signal is not as bad, but can still take a minute or two to update everything on my computer. The phone app is better.