diff --git a/server/models/Book.js b/server/models/Book.js
index d9f2ff13..c42e744d 100644
--- a/server/models/Book.js
+++ b/server/models/Book.js
@@ -258,7 +258,8 @@ class Book extends Model {
   }
 
   get includedAudioFiles() {
-    return this.audioFiles.filter((af) => !af.exclude)
+    const audioFiles = Array.isArray(this.audioFiles) ? this.audioFiles : []
+    return audioFiles.filter((af) => !af.exclude)
   }
 
   get hasMediaFiles() {
@@ -328,10 +329,18 @@ class Book extends Model {
    * @returns {number}
    */
   get size() {
+    const computedSize = Number(this.dataValues?.computedMediaSize)
+    if (Number.isFinite(computedSize)) {
+      return computedSize
+    }
+
     let total = 0
-    this.audioFiles.forEach((af) => (total += af.metadata.size))
+    const audioFiles = Array.isArray(this.audioFiles) ? this.audioFiles : []
+    audioFiles.forEach((af) => {
+      total += Number(af?.metadata?.size) || 0
+    })
     if (this.ebookFile) {
-      total += this.ebookFile.metadata.size
+      total += Number(this.ebookFile?.metadata?.size) || 0
     }
     return total
   }
@@ -655,14 +664,18 @@ class Book extends Model {
       throw new Error(`[Book] Cannot convert to old JSON because series are not loaded`)
     }
 
+    const computedNumTracks = Number(this.dataValues?.computedNumTracks)
+    const computedNumAudioFiles = Number(this.dataValues?.computedNumAudioFiles)
+    const computedNumChapters = Number(this.dataValues?.computedNumChapters)
+
     return {
       id: this.id,
       metadata: this.oldMetadataToJSONMinified(),
       coverPath: this.coverPath,
       tags: [...(this.tags || [])],
-      numTracks: this.includedAudioFiles.length,
-      numAudioFiles: this.audioFiles?.length || 0,
-      numChapters: this.chapters?.length || 0,
+      numTracks: Number.isFinite(computedNumTracks) ? computedNumTracks : this.includedAudioFiles.length,
+      numAudioFiles: Number.isFinite(computedNumAudioFiles) ? computedNumAudioFiles : this.audioFiles?.length || 0,
+      numChapters: Number.isFinite(computedNumChapters) ? computedNumChapters : this.chapters?.length || 0,
       duration: this.duration,
       size: this.size,
       ebookFormat: this.ebookFile?.ebookFormat
diff --git a/server/models/LibraryItem.js b/server/models/LibraryItem.js
index b33fa585..c22038dd 100644
--- a/server/models/LibraryItem.js
+++ b/server/models/LibraryItem.js
@@ -491,11 +491,7 @@ class LibraryItem extends Model {
       }
       Logger.debug(`Loaded ${newestAuthorsPayload.authors.length} of ${newestAuthorsPayload.count} authors for "Newest Authors" in ${newestAuthorsResult.elapsedSeconds}s`)
     } else if (library.isPodcast) {
-      const [newestEpisodesResult, mostRecentResult, mediaFinishedResult] = await Promise.all([
-        timed(() => libraryFilters.getNewestPodcastEpisodes(library, user, limit)),
-        timed(() => libraryFilters.getLibraryItemsMostRecentlyAdded(library, user, include, limit)),
-        timed(() => libraryFilters.getMediaFinished(library, user, include, limit))
-      ])
+      const [newestEpisodesResult, mostRecentResult, mediaFinishedResult] = await Promise.all([timed(() => libraryFilters.getNewestPodcastEpisodes(library, user, limit)), timed(() => libraryFilters.getLibraryItemsMostRecentlyAdded(library, user, include, limit)), timed(() => libraryFilters.getMediaFinished(library, user, include, limit))])
 
       const newestEpisodesPayload = newestEpisodesResult.payload
       // "Newest Episodes" shelf
@@ -1009,6 +1005,9 @@ class LibraryItem extends Model {
       throw new Error(`[LibraryItem] Cannot convert to old JSON without media for library item "${this.id}"`)
     }
 
+    const computedNumFiles = Number(this.dataValues?.computedNumFiles)
+    const numFiles = Number.isFinite(computedNumFiles) ? computedNumFiles : this.libraryFiles?.length || 0
+
     return {
       id: this.id,
       ino: this.ino,
@@ -1027,7 +1026,7 @@ class LibraryItem extends Model {
       isInvalid: !!this.isInvalid,
       mediaType: this.mediaType,
       media: this.media.toOldJSONMinified(),
-      numFiles: this.libraryFiles.length,
+      numFiles,
       size: this.size
     }
   }
diff --git a/server/utils/queries/seriesFilters.js b/server/utils/queries/seriesFilters.js
index ed71e5b3..6656b039 100644
--- a/server/utils/queries/seriesFilters.js
+++ b/server/utils/queries/seriesFilters.js
@@ -158,10 +158,55 @@ module.exports = {
           model: Database.bookSeriesModel,
           include: {
             model: Database.bookModel,
+            attributes: [
+              'id',
+              'title',
+              'subtitle',
+              'publishedYear',
+              'publishedDate',
+              'publisher',
+              'description',
+              'isbn',
+              'asin',
+              'language',
+              'explicit',
+              'abridged',
+              'coverPath',
+              'duration',
+              'narrators',
+              'ebookFile',
+              'tags',
+              'genres',
+              [
+                Sequelize.literal(`CASE
+                  WHEN json_valid(audioFiles) THEN (
+                    SELECT count(*)
+                    FROM json_each(audioFiles) af
+                    WHERE COALESCE(json_extract(af.value, '$.exclude'), 0) = 0
+                  )
+                  ELSE 0
+                END`),
+                'computedNumTracks'
+              ],
+              [Sequelize.literal('CASE WHEN json_valid(audioFiles) THEN json_array_length(audioFiles) ELSE 0 END'), 'computedNumAudioFiles'],
+              [Sequelize.literal('CASE WHEN json_valid(chapters) THEN json_array_length(chapters) ELSE 0 END'), 'computedNumChapters'],
+              [
+                Sequelize.literal(`(
+                  COALESCE((
+                    SELECT SUM(COALESCE(CAST(json_extract(af.value, '$.metadata.size') AS INTEGER), 0))
+                    FROM json_each(audioFiles) af
+                    WHERE json_valid(audioFiles)
+                  ), 0)
+                  + COALESCE(CAST(json_extract(ebookFile, '$.metadata.size') AS INTEGER), 0)
+                )`),
+                'computedMediaSize'
+              ]
+            ],
             where: userPermissionBookWhere.bookWhere,
             include: [
               {
-                model: Database.libraryItemModel
+                model: Database.libraryItemModel,
+                attributes: ['id', 'ino', 'extraData', 'libraryId', 'libraryFolderId', 'path', 'relPath', 'isFile', 'mtime', 'ctime', 'birthtime', 'createdAt', 'updatedAt', 'isMissing', 'isInvalid', 'mediaType', 'size', [Sequelize.literal('CASE WHEN json_valid(libraryFiles) THEN json_array_length(libraryFiles) ELSE 0 END'), 'computedNumFiles']]
               },
               {
                 model: Database.authorModel