WizardLoop · WizardLoop · Jun 15, 2026 · Jun 15, 2026 · Jun 15, 2026 · Jun 15, 2026
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -130,31 +130,27 @@ Added functionality to send initial status messages when gathering peers and sta
 ## [3.0.1] - 2026-01-11
 
 ### Fixed:
-
 * lastBroadcastData
 
 ---
 
 ## [3.0.2] - 2026-01-11
 
 ### Added:
-
 * setDataDir & getDataDir
 
 ---
 
 ## [3.0.3] - 2026-01-11
 
 ### Fixed:
-
 * Fix getDataDir() to handle uninitialized $dataDir
 
 ---
 
 ## [3.0.4] - 2026-01-13
 
 ### Added & Fixed:
-
 * Extracted peer filtering from broadcast execution
 * Reduced unnecessary processing during broadcasts
 
@@ -163,7 +159,6 @@ Added functionality to send initial status messages when gathering peers and sta
 ## [3.0.5] - 2026-01-18
 
 ### Added & Fixed:
-
 * Handle additional RPCErrorException cases
 
 ---
@@ -186,7 +181,6 @@ Added functionality to send initial status messages when gathering peers and sta
 ## [3.2.0] - 2026-06-13
 
 ### Added
-
 - Edit last broadcast message with `editLastBroadcastForAll()`.
 - Optional `broadcastId` targeting for editing or deleting the last message of a specific broadcast.
 - Metadata peer loading for targeted edit/delete calls when `allUsers` is empty and `broadcastId` is provided.
@@ -198,7 +192,6 @@ Added functionality to send initial status messages when gathering peers and sta
 - Internal error logging to `data/broadcast-errors.log`.
 
 ### Changed
-
 - Safer state handling using shared state references by broadcast id.
 - Safer cancel behavior: `cancel()` now marks cancellation without clearing in-flight requests.
 - `progress()` now includes edit, scheduled, self-destruct, total, elapsed, and TPS fields.
@@ -207,7 +200,6 @@ Added functionality to send initial status messages when gathering peers and sta
 - `deleteAllBroadcastsForAll()` now uses one progress loop instead of concurrent progress edits from workers.
 
 ### Fixed
-
 - Pause/resume/cancel state reference issue.
 - Workers not stopping after `done`.
 - Unsafe watchdog behavior that could duplicate sends.
@@ -218,16 +210,42 @@ Added functionality to send initial status messages when gathering peers and sta
 ## [3.2.1] - 2026-06-13
 
 ### Added
-
 - Added support for editing last broadcast messages with media loaded from `data/{adminId}/media.txt`.
 - Added compatibility for passing saved media values / `botApiFileId` into `editLastBroadcastForAll()`.
 
 ### Changed
-
 - Relaxed the `$media` parameter in `BroadcastManager::editLastBroadcastForAll()` so it is no longer limited to `?array`.
 - Edit-last-broadcast flow can now reuse the same saved media format used by regular broadcast sending.
 
 ### Notes
-
 - Passing `null` as media keeps the existing media unchanged.
 - Passing a saved media value attempts to update the edited message media/caption.
+
+---
+
+## [3.2.2] - 2026-06-15
+
+### Changed
+* Reduced default broadcast concurrency from `20` to `10`.
+* Reduced the maximum allowed concurrency limit from `50` to `30` to reduce pressure on the MadelineProto event loop during large broadcasts.
+* Progress status messages are now edited every `5` seconds instead of every second.
+* Progress status updates now also perform a final update when the operation reaches completion.
+* Slowed down broadcast workers with a small delay between processed jobs.
+* Added a delay after each media album chunk sent with `sendMultiMedia`.
+* Added a delay between sequential messages sent to the same peer.
+* Broadcast control buttons are now displayed in English:
+  * `Pause`
+  * `Resume`
+  * `Cancel`
+
+### Fixed
+* Reduced the chance of `Timeout while waiting for updates.getChannelDifference` after heavy broadcasts.
+* Reduced unnecessary progress-message edit calls during active broadcasts.
+* Prevented noisy logs for harmless `MESSAGE_NOT_MODIFIED` errors during progress updates.
+* Improved progress update stability by ignoring unchanged status edits instead of logging them as failures.
+
+### Notes
+* This release keeps the custom BroadcastManager flow, including saved message IDs, edit-last-broadcast, delete-last-broadcast, scheduled broadcasts, and self-destruct broadcasts.
+* This is a stability and load-reduction update; it does not migrate to MadelineProto's official Broadcast API.
+
+---
diff --git a/README.md b/README.md
@@ -1,7 +1,7 @@
 # BroadcastManager
 
 **High-Performance Telegram Broadcast Manager** for [MadelineProto](https://docs.madelineproto.xyz/).
-Manage Telegram broadcasts efficiently: send text, media, albums, inline buttons, pin/unpin messages, delete broadcasts, edit broadcast, schedule broadcasts, run self-destruct deletion jobs, and track live progress.
+Manage Telegram broadcasts efficiently: send text, media, albums, inline buttons, pin/unpin messages, delete previous broadcasts, edit the last broadcast, schedule broadcasts, run self-destruct deletion jobs, and track live progress.
 
 [![AGPL License](https://img.shields.io/badge/license-AGPL--3.0-blue.svg)](LICENSE)
 [![Made with PHP](https://img.shields.io/badge/Made%20with-PHP-blue)](https://github.com/WizardLoop/BroadcastManager)
@@ -94,10 +94,12 @@ $progress = $manager->progress($broadcastId);
 Concurrency is clamped internally:
 
 * Minimum: `1`
-* Maximum: `50`
-* Default: `20`
+* Maximum: `30`
+* Default: `10`
 * Recommended examples: `10`
 
+Live status messages are updated at most once every `5` seconds and once again when the operation finishes.
+
 ---
 
 ## Message Payloads
@@ -578,7 +580,7 @@ public function broadcastWithProgress(
     array $messages,
     $chatId = null,
     bool $pin = false,
-    int $concurrency = 20,
+    int $concurrency = 10,
     ?int $selfDestructHours = null
 ): string;
 
@@ -587,8 +589,8 @@ public function editLastBroadcastForAll(
     string $newText,
     $chatId = null,
     ?array $buttons = null,
-    ?array $media = null,
-    int $concurrency = 20,
+    $media = null,
+    int $concurrency = 10,
     string $parseMode = 'HTML',
     ?string $broadcastId = null
 ): string;
@@ -599,7 +601,7 @@ public function scheduleBroadcastForAll(
     int $scheduledAt,
     $chatId = null,
     bool $pin = false,
-    int $concurrency = 20,
+    int $concurrency = 10,
     ?int $selfDestructHours = null
 ): string;
 
@@ -610,11 +612,11 @@ public function listScheduledBroadcasts(): array;
 public function deleteLastBroadcastForAll(
     array $allUsers,
     $chatId = null,
-    int $concurrency = 20,
+    int $concurrency = 10,
     ?string $broadcastId = null
 ): string;
-public function deleteAllBroadcastsForAll(array $allUsers, $chatId = null, int $concurrency = 20): string;
-public function unpinAllMessagesForAll(array $allUsers, $chatId = null, int $concurrency = 20): string;
+public function deleteAllBroadcastsForAll(array $allUsers, $chatId = null, int $concurrency = 10): string;
+public function unpinAllMessagesForAll(array $allUsers, $chatId = null, int $concurrency = 10): string;
 
 public function runDueSelfDestructJobs(): array;
 public function cancelSelfDestructJob(string $jobId): bool;

diff --git a/src/BroadcastManager.php b/src/BroadcastManager.php
@@ -23,8 +23,15 @@
 class BroadcastManager
 {
     private const MAX_ATTEMPTS = 3;
-    private const DEFAULT_CONCURRENCY = 20;
-    private const MAX_CONCURRENCY = 50;
+    private const DEFAULT_CONCURRENCY = 10;
+    private const MAX_CONCURRENCY = 30;
+    private const PROGRESS_UPDATE_INTERVAL = 5.0;
+    private const WORKER_IDLE_SLEEP = 1.0;
+    private const WORKER_RETRY_SLEEP = 1.0;
+    private const WORKER_PAUSED_SLEEP = 1.5;
+    private const WORKER_AFTER_JOB_SLEEP = 0.75;
+    private const SEND_MESSAGE_SLEEP = 0.35;
+    private const SEND_CHUNK_SLEEP = 0.75;
 
     private const SEND_HARD_FAIL_RPCS = [
         'INPUT_USER_DEACTIVATED',
@@ -919,25 +926,25 @@ private function startQueueWorkers(
             \Amp\async(function () use (&$state, $handler, $hardFailRpcs, $rpcHandler, $retryThrowable): void {
                 while (!$state['cancel'] && !$state['done']) {
                     if ($state['queue']->isEmpty()) {
-                        $this->api->sleep(0.5);
+                        $this->api->sleep(self::WORKER_IDLE_SLEEP);
                         continue;
                     }
 
                     if ($state['paused']) {
-                        $this->api->sleep(1);
+                        $this->api->sleep(self::WORKER_PAUSED_SLEEP);
                         continue;
                     }
 
                     $job = $state['queue']->dequeue();
 
                     if (($job['availableAt'] ?? 0) > microtime(true)) {
                         $state['queue']->enqueue($job);
-                        $this->api->sleep(0.5);
+                        $this->api->sleep(self::WORKER_RETRY_SLEEP);
                         continue;
                     }
 
                     while ($state['paused'] && !$state['cancel'] && !$state['done']) {
-                        $this->api->sleep(1);
+                        $this->api->sleep(self::WORKER_PAUSED_SLEEP);
                     }
 
                     if ($state['cancel'] || $state['done']) {
@@ -981,7 +988,7 @@ private function startQueueWorkers(
                         }
                     }
 
-                    $this->api->sleep(0.25);
+                    $this->api->sleep(self::WORKER_AFTER_JOB_SLEEP);
                 }
             });
         }
@@ -1093,6 +1100,8 @@ private function sendMessagesToPeer(string $peer, array $messages): array
                         $messageIds[] = $messageId;
                     }
                 }
+
+                $this->api->sleep(self::SEND_CHUNK_SLEEP);
             }
 
             return $messageIds;
@@ -1115,6 +1124,8 @@ private function sendMessagesToPeer(string $peer, array $messages): array
             if ($messageId > 0) {
                 $messageIds[] = $messageId;
             }
+
+            $this->api->sleep(self::SEND_MESSAGE_SLEEP);
         }
 
         return $messageIds;
@@ -1642,13 +1653,13 @@ private function buildStatusControls(array $state): ?array
 
         $id = (string) $state['id'];
         $toggleAction = !empty($state['paused']) ? 'resume' : 'pause';
-        $toggleText = !empty($state['paused']) ? '▶️ המשך' : '⏸ השהייה';
+        $toggleText = !empty($state['paused']) ? 'Resume' : 'Pause';
 
         return [
             'inline_keyboard' => [
                 [
                     ['text' => $toggleText, 'callback_data' => 'bm:' . $toggleAction . ':' . $id],
-                    ['text' => '🛑 ביטול', 'callback_data' => 'bm:cancel:' . $id],
+                    ['text' => 'Cancel', 'callback_data' => 'bm:cancel:' . $id],
                 ],
             ],
         ];
@@ -1710,6 +1721,20 @@ private function startProgressLoop($chatId, ?int $statusId, array &$state, strin
 
                         $this->api->messages->editMessage($payload);
                         $last = $fingerprint;
+                    } catch (RPCErrorException $e) {
+                        if (
+                            ($e->rpc ?? '') === 'MESSAGE_NOT_MODIFIED'
+                            || str_contains($e->getMessage(), 'MESSAGE_NOT_MODIFIED')
+                        ) {
+                            $last = $fingerprint;
+                            $this->api->sleep(self::PROGRESS_UPDATE_INTERVAL);
+                            continue;
+                        }
+
+                        if ($loggedFailures < 3) {
+                            $loggedFailures++;
+                            $this->logError('Failed to update status message.', $e);
+                        }
                     } catch (Throwable $e) {
                         if ($loggedFailures < 3) {
                             $loggedFailures++;
@@ -1718,7 +1743,7 @@ private function startProgressLoop($chatId, ?int $statusId, array &$state, strin
                     }
                 }
 
-                $this->api->sleep(1);
+                $this->api->sleep(self::PROGRESS_UPDATE_INTERVAL);
             }
         });
     }
@@ -1742,6 +1767,15 @@ private function editStatusMessage($chatId, ?int $statusId, string $text, ?array
             }
 
             $this->api->messages->editMessage($payload);
+        } catch (RPCErrorException $e) {
+            if (
+                ($e->rpc ?? '') === 'MESSAGE_NOT_MODIFIED'
+                || str_contains($e->getMessage(), 'MESSAGE_NOT_MODIFIED')
+            ) {
+                return;
+            }
+
+            $this->logError('Failed to edit final status message.', $e);
         } catch (Throwable $e) {
             $this->logError('Failed to edit final status message.', $e);
         }