Typing speed in chat is a bit slow on old iPhone 12

[taoeffect]

Problem

Very strange, but I've noticed that the keyboard on my old iPhone 12 lags when typing in the chat input field. This doesn't happen on an iPhone 13, which is surprising.

I don't know if this is a problem with my specific phone or with iPhone 12 (and older) phones.

EDIT: I discovered that the problem happens in Lockdown mode. I'm guessing because JIT is disabled. This is still an issue - in other words, it means there's too much JS running on each keystroke, so if we could debounce it and/or optimize it it would still improve things.

Solution

Check the logic that gets run when typing in the chat input field, and consider either optimizing it or debouncing it (or both) to fix this.