diff --git a/src/Module/Conversation/Network.php b/src/Module/Conversation/Network.php
index da3054b1f5..6bd342e19c 100644
--- a/src/Module/Conversation/Network.php
+++ b/src/Module/Conversation/Network.php
@@ -47,10 +47,12 @@ use Friendica\Core\L10n;
 use Friendica\Core\PConfig\Capability\IManagePersonalConfigValues;
 use Friendica\Core\Renderer;
 use Friendica\Core\Session\Capability\IHandleUserSessions;
+use Friendica\Core\Worker;
 use Friendica\Database\DBA;
 use Friendica\Database\Database;
 use Friendica\Model\Contact;
 use Friendica\Model\Circle;
+use Friendica\Model\Post;
 use Friendica\Model\Profile;
 use Friendica\Module\Response;
 use Friendica\Module\Security\Login;
@@ -231,7 +233,7 @@ class Network extends Timeline
 			} else {
 				$items = $this->getItems();
 			}
-	
+
 			$o .= $this->conversation->render($items, Conversation::MODE_NETWORK, false, false, $this->getOrder(), $this->session->getLocalUserId());
 		} catch (\Exception $e) {
 			$o .= $this->l10n->t('Error %d (%s) while fetching the timeline.', $e->getCode(), $e->getMessage());
@@ -470,23 +472,20 @@ class Network extends Timeline
 			$items = array_reverse($items);
 		}
 
-		if ($this->database->isResult($items)) {
-			$parents = array_column($items, 'uri-id');
-		} else {
-			$parents = [];
+		if ($this->ping || !$this->database->isResult($items)) {
+			return $items;
 		}
 
-		// We aren't going to try and figure out at the item, circle, and page
-		// level which items you've seen and which you haven't. If you're looking
-		// at the top level network page just mark everything seen.
-		if (!$this->circleId && !$this->star && !$this->mention) {
-			$condition = ['unseen' => true, 'uid' => $this->session->getLocalUserId()];
-			$this->setItemsSeenByCondition($condition);
-		} elseif (!empty($parents)) {
-			$condition = ['unseen' => true, 'uid' => $this->session->getLocalUserId(), 'parent-uri-id' => $parents];
-			$this->setItemsSeenByCondition($condition);
+		$this->setItemsSeenByCondition(['unseen' => true, 'uid' => $this->session->getLocalUserId(), 'parent-uri-id' => array_column($items, 'uri-id')]);
+
+		$posts = Post::selectToArray(['uri-id'], ['unseen' => true, 'uid' => $this->session->getLocalUserId()], ['limit' => 100]);
+		if (!empty($posts)) {
+			$this->setItemsSeenByCondition(['unseen' => true, 'uid' => $this->session->getLocalUserId(), 'uri-id' => array_column($posts, 'uri-id')]);
 		}
 
+		if (count($posts) == 100) {
+			Worker::add(Worker::PRIORITY_MEDIUM, 'SetSeen', $this->session->getLocalUserId());
+		}
 		return $items;
 	}
 
diff --git a/src/Worker/SetSeen.php b/src/Worker/SetSeen.php
new file mode 100644
index 0000000000..3091e4ea37
--- /dev/null
+++ b/src/Worker/SetSeen.php
@@ -0,0 +1,37 @@
+<?php
+/**
+ * @copyright Copyright (C) 2010-2024, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Worker;
+
+use Friendica\Core\Logger;
+use Friendica\Model\Item;
+
+/**
+ * Set posts seen for the given user.
+ */
+class SetSeen
+{
+	public static function execute(int $uid)
+	{
+		$ret = Item::update(['unseen' => false], ['unseen' => true, 'uid' => $uid]);
+		Logger::debug('Set seen', ['uid' => $uid, 'ret' => $ret]);
+	}
+}