Bringing back the idea of checking for change before updating the screen. The check happens between 500us and 1ms and the screen update generally in 10-100ms

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/FeedViewModel.kt

@@ -63,9 +63,9 @@ abstract class FeedViewModel(val localFilter: FeedFilter<Note>): ViewModel() {
         val oldNotesState = feedContent.value
         if (oldNotesState is FeedState.Loaded) {
             // Using size as a proxy for has changed.
-            //if (notes != oldNotesState.feed.value) {
+            if (notes != oldNotesState.feed.value) {
                 updateFeed(notes)
-            //}
+            }
         } else {
             updateFeed(notes)
         }

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/LnZapFeedViewModel.kt

@@ -38,7 +38,9 @@ open class LnZapFeedViewModel(val dataSource: FeedFilter<Pair<Note, Note>>): Vie
         val oldNotesState = feedContent.value
         if (oldNotesState is LnZapFeedState.Loaded) {
             // Using size as a proxy for has changed.
-            updateFeed(notes)
+            if (notes != oldNotesState.feed.value) {
+                updateFeed(notes)
+            }
         } else {
             updateFeed(notes)
         }

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/UserFeedViewModel.kt

@@ -42,7 +42,9 @@ open class UserFeedViewModel(val dataSource: FeedFilter<User>): ViewModel() {
         val oldNotesState = feedContent.value
         if (oldNotesState is UserFeedState.Loaded) {
             // Using size as a proxy for has changed.
-            updateFeed(notes)
+            if (notes != oldNotesState.feed.value) {
+                updateFeed(notes)
+            }
         } else {
             updateFeed(notes)
         }