From b082bb0d5086591632a91ea6410eec82fa198fde Mon Sep 17 00:00:00 2001
From: "K.I.R.O" <236710061+vinney491-dotcom@users.noreply.github.com>
Date: Thu, 23 Jul 2026 00:47:07 -0500
Subject: [PATCH] perf(social): cap feed length to stop long browsing sessions
 going choppy

---
 .../Apps/Aethergram/AethergramApp.cs          |  4 ++++
 src/Aetherphone/Apps/Chirper/ChirperApp.cs    |  5 +++++
 src/Aetherphone/Core/Social/FeedLane.cs       | 20 +++++++++++++++++++
 .../Core/Social/SocialFeedStore.cs            |  4 ++++
 4 files changed, 33 insertions(+)

diff --git a/src/Aetherphone/Apps/Aethergram/AethergramApp.cs b/src/Aetherphone/Apps/Aethergram/AethergramApp.cs
index 45da6731c..05dcf3f19 100644
--- a/src/Aetherphone/Apps/Aethergram/AethergramApp.cs
+++ b/src/Aetherphone/Apps/Aethergram/AethergramApp.cs
@@ -485,6 +485,10 @@ private void DrawFeedList(Rect listRect, SocialFeedScope scope)
         var snapshot = store.Feed(scope);
         using (AppSurface.Begin(listRect))
         {
+            if (ImGui.GetScrollY() < 1f)
+            {
+                store.TrimFeed(scope, SocialFeedStore.FeedCap);
+            }
             stories.DrawTray(theme);
             if (snapshot.Length == 0)
             {
diff --git a/src/Aetherphone/Apps/Chirper/ChirperApp.cs b/src/Aetherphone/Apps/Chirper/ChirperApp.cs
index 2dc085ba7..6e29709cc 100644
--- a/src/Aetherphone/Apps/Chirper/ChirperApp.cs
+++ b/src/Aetherphone/Apps/Chirper/ChirperApp.cs
@@ -279,6 +279,11 @@ private void DrawFeedList(Rect listRect, SocialFeedScope scope)
         var snapshot = store.Feed(scope);
         using (AppSurface.Begin(listRect))
         {
+            if (ImGui.GetScrollY() < 1f)
+            {
+                store.TrimFeed(scope, SocialFeedStore.FeedCap);
+
+            }
             if (snapshot.Length == 0)
             {
                 var message = store.IsLoading(scope) ? Loc.T(L.Common.Loading) :
diff --git a/src/Aetherphone/Core/Social/FeedLane.cs b/src/Aetherphone/Core/Social/FeedLane.cs
index 45ec70abe..0848ffe08 100644
--- a/src/Aetherphone/Core/Social/FeedLane.cs
+++ b/src/Aetherphone/Core/Social/FeedLane.cs
@@ -60,6 +60,26 @@ public void ApplyMore(TPost[] incoming, string? nextCursor)
         }
     }
 
+    public void Trim(int max)
+    {
+        if (max <= 0)
+        {
+            return;
+        }
+
+        lock (gate)
+        {
+            if (items.Length <= max)
+            {
+                return;
+            }
+
+            var trimmed = new TPost[max];
+            Array.Copy(items, trimmed, max);
+            items = trimmed;
+        }
+    }
+
     public void Clear()
     {
         lock (gate)
diff --git a/src/Aetherphone/Core/Social/SocialFeedStore.cs b/src/Aetherphone/Core/Social/SocialFeedStore.cs
index df87d2f68..8570d419e 100644
--- a/src/Aetherphone/Core/Social/SocialFeedStore.cs
+++ b/src/Aetherphone/Core/Social/SocialFeedStore.cs
@@ -105,6 +105,10 @@ private void OnSessionChanged()
 
     public bool LoadingMore(SocialFeedScope scope) => Lane(scope).LoadingMore;
 
+    public const int FeedCap = 300;
+
+    public void TrimFeed(SocialFeedScope scope, int max) => Lane(scope).Trim(max);
+
     private FeedLane<PostDto> Lane(SocialFeedScope scope) =>
         scope == SocialFeedScope.ForYou ? forYouLane : followingLane;