Hi, When I insert an item into list displayed via `Column`all subsequent elements are recomposed, meaning that if I insert at the end everything's fine but when I insert at the beginning there is a huge delay. Doesn't matter if I use `mutableStateOf`or

mutableStateListOf

, whether I use `key`function or not (though it does feel like it affects performance somewhat). I don't use `LazyColumn`because it is laggy in general. Known problem, walkaround? Thanks.

Not fixes for that really. You asked

Column

to remeasure everything by inserting at the top. You'd need to use a

LazyColumn

if you want to skip recomposition of non-visible items.

`LazyComunm`lags when scrolling (it is often ok with scrollwheel but not when dragging the scrollbar). But now that I switched my simplified testing example to `LazyColumn`I see that at least the performance of insertion is acceptable. I may have to try with maybe keys or something in my main case where it could took line a second to insert something. FYI the list has about 300 items consisting of `Text`and

Icon

, it is just adapted tree view from CodeViewer example.

Nope, you need subcomposition to do that. Which

Column

doesn't do.

All items are the same size, single line of text. Yes, unlike on `LazyColumn`with `Columns`scrolling is smooth.