diff --git a/app/Models/Podcast.php b/app/Models/Podcast.php
index f4a77663..a3372ee8 100644
--- a/app/Models/Podcast.php
+++ b/app/Models/Podcast.php
@@ -16,7 +16,6 @@ use Illuminate\Support\Str;
 use Laravel\Scout\Searchable;
 use PhanAn\Poddle\Values\CategoryCollection;
 use PhanAn\Poddle\Values\ChannelMetadata;
-use PhanAn\Poddle\Values\Episode as EpisodeDTO;
 
 /**
  * @property-read string $id
@@ -82,21 +81,6 @@ class Podcast extends Model
             ->withTimestamps();
     }
 
-    public function addEpisodeByDTO(EpisodeDTO $dto): Episode
-    {
-        return $this->episodes()->create([
-            'title' => $dto->title,
-            'lyrics' => '',
-            'path' => $dto->enclosure->url,
-            'created_at' => $dto->metadata->pubDate ?: now(),
-            'episode_metadata' => $dto->metadata,
-            'episode_guid' => $dto->guid,
-            'length' => $dto->metadata->duration ?? 0,
-            'mtime' => time(),
-            'is_public' => true,
-        ]);
-    }
-
     /** @return array<mixed> */
     public function toSearchableArray(): array
     {
diff --git a/app/Models/Song.php b/app/Models/Song.php
index 4d62aa20..15ded62f 100644
--- a/app/Models/Song.php
+++ b/app/Models/Song.php
@@ -99,9 +99,7 @@ class Song extends Model
 
     protected static function booted(): void
     {
-        static::creating(static function (self $song): void {
-            $song->id ??= Str::uuid()->toString();
-        });
+        static::creating(static fn (Song $song) => $song->id ??= Str::uuid()->toString());
     }
 
     public static function query(?PlayableType $type = null, ?User $user = null): SongBuilder
diff --git a/app/Services/PodcastService.php b/app/Services/PodcastService.php
index 42f4914d..ca5c0bdc 100644
--- a/app/Services/PodcastService.php
+++ b/app/Services/PodcastService.php
@@ -17,6 +17,7 @@ use Illuminate\Support\Arr;
 use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Facades\Http;
 use Illuminate\Support\Facades\Log;
+use Illuminate\Support\Str;
 use PhanAn\Poddle\Poddle;
 use PhanAn\Poddle\Values\Episode as EpisodeValue;
 use PhanAn\Poddle\Values\EpisodeCollection;
@@ -118,13 +119,38 @@ class PodcastService
     private function synchronizeEpisodes(Podcast $podcast, EpisodeCollection $episodeCollection): void
     {
         $existingEpisodeGuids = $this->songRepository->getEpisodeGuidsByPodcast($podcast);
+        $records = [];
+        $ids = [];
 
         /** @var EpisodeValue $episodeValue */
         foreach ($episodeCollection as $episodeValue) {
             if (!in_array($episodeValue->guid->value, $existingEpisodeGuids, true)) {
-                $podcast->addEpisodeByDTO($episodeValue);
+                $id = Str::uuid()->toString();
+                $ids[] = $id;
+                $records[] = [
+                    'id' => $id,
+                    'podcast_id' => $podcast->id,
+                    'title' => $episodeValue->title,
+                    'lyrics' => '',
+                    'path' => $episodeValue->enclosure->url,
+                    'created_at' => $episodeValue->metadata->pubDate ?: now(),
+                    'updated_at' => $episodeValue->metadata->pubDate ?: now(),
+                    'episode_metadata' => $episodeValue->metadata->toJson(),
+                    'episode_guid' => $episodeValue->guid,
+                    'length' => $episodeValue->metadata->duration ?? 0,
+                    'mtime' => time(),
+                    'is_public' => true,
+                ];
             }
         }
+
+        // We use insert() instead of $podcast->episodes()->createMany() for better performance,
+        // as the latter would trigger a separate query for each episode.
+        Episode::insert($records);
+
+        // Since insert() doesn't trigger model events, Scout operations will not be called.
+        // We have to manually update the search index.
+        Episode::query()->whereIn('id', $ids)->searchable();
     }
 
     private function subscribeUserToPodcast(User $user, Podcast $podcast): void
diff --git a/resources/assets/js/stores/songStore.ts b/resources/assets/js/stores/songStore.ts
index 550422b7..cf062b33 100644
--- a/resources/assets/js/stores/songStore.ts
+++ b/resources/assets/js/stores/songStore.ts
@@ -149,13 +149,13 @@ export const songStore = {
   getShareableUrl: (song: Playable) => `${window.BASE_URL}#/song/${song.id}`,
 
   syncWithVault (playables: MaybeArray<Playable>) {
-    return arrayify(playables).map(song => {
-      let local = this.byId(song.id)
+    return arrayify(playables).map(playable => {
+      let local = this.byId(playable.id)
 
       if (local) {
-        merge(local, song)
+        merge(local, playable)
       } else {
-        local = reactive(song)
+        local = reactive(playable)
         local.playback_state = 'Stopped'
         this.watchPlayCount(local)
         this.vault.set(local.id, local)