Takes a while to load dates

[favianca]

I am using hermes and polyfill, at first I was using another locale but I changed it back to en but it doesn't seem to fix it. I also thought that it might be the emulator but I have tried on real devices and the problem is still there

[brunohkbx]

I was about to open an issue for that 😅

This issue is very noticeable in lower-end devices such as iPhone 5s

Example with production bundle

Dev env ( It's taking more than 2s )

Is it really necessary to load 4 months at once? wouldn't be better to render only the current one?

[RichardLindhout]

Interesting will be a nice case to improve performance since as far as I know I have tried almost every optimisation possible.
I hope React Native Fabric will improve things...

Maybe we can indeed render less on low-end devices but we need to at least render 3 months because it will be too much white when scrolling else.

[brunohkbx]

@RichardLindhout how about rendering the current month in the first render and then render the other 3 right after?

I think we could try to wrap a function responsible for rendering the other 3 months with InteractionManager.runAfterInteractions

[favianca]

@brunohkbx hm that is interesting but in my case I was not loading multiple months as it still load when I change to next month

[RichardLindhout]

I think the rendering needs to te be faster as this will bite back when we scroll down

[RichardLindhout]

Let's rewrite it in Flutter :-P

[RichardLindhout]

Maybe we could detect the performance of the device and edit the amount of months loaded, because I also want fast scrolling so maybe it's a good idea to only 1 month on smaller screens

[RichardLindhout]

Indeed we should not need to load 4 months at once, it also seems like the all 4 month are re-rendered when user scrolls while only new ones should reload

[RichardLindhout]

I've improved some things in v0.4.5, I would also recommend using Hermes on Android.

[kendallroth]

I am using Expo with Hermes (and polyfills) and still seeing very slow loading performance 🤷

[Jeandcc]

Is it only on my end, ,or does this continue to be an issue?

[AviadBag]

Well still an issue for me..

[RichardLindhout]

I think we could optimize using the native view / text directly. See callstack/react-native-paper#4157 cc: @iM-GeeKy