we experience a lot of lag when LazyColumn adds a new portion of composables. What can we do to miti...

# compose

[ildar.i [Android]]

we experience a lot of lag when LazyColumn adds a new portion of composables. What can we do to mitigate it?
it’s a calendar with a lot of distinct Text()’s each month

[Chris Fillmore]

Are you testing performance in debug builds or release builds?

The performance of release builds is known to be better than debug, for compose.

[ildar.i [Android]]

It's debug mostly, we have just started. But the lag is so drastic, it obviously won't go away on release builds. The lag happens when a new portion of items is being added to LazyColumn

[Chris Fillmore]

The difference between debug and release builds is noticeable. You can search this channel for many of the same questions; it comes up often.

I'm not saying you don't have a performance problem, but you should make sure to always measure performance in release builds, not debug.

[Colton Idle]

Yeah. Try a release build ORRR at the very least add debuggable = false flag to your debug build config in build.gradle just to see how perf improves.

[Zach Klippenstein (he/him) [MOD]]

Are your list items homogenous? If not, make sure to specify the item type so compose can more efficiently recycle list nodes

[Diraj H S]

@Zach Klippenstein (he/him) [MOD] Could you provide more info on how we can specify the item type in LazyColumn?

[Chris Fillmore]

Take a look at LazyListScope.items

https://developer.android.com/reference/kotlin/androidx/compose/foundation/lazy/LazyListScope#items(kotlin.Int,kotlin.Function1,kotlin.Function1,kotlin.Function2)