diff --git a/app/components/post_preview_component.rb b/app/components/post_preview_component.rb
index 7c55fdc63..725763559 100644
--- a/app/components/post_preview_component.rb
+++ b/app/components/post_preview_component.rb
@@ -123,6 +123,6 @@ class PostPreviewComponent < ApplicationComponent
   end
 
   def has_sound?
-    post.has_tag?("sound")
+    is_animated? && post.has_tag?("sound")
   end
 end
diff --git a/app/models/media_asset.rb b/app/models/media_asset.rb
index ced1351bc..ac0d28f89 100644
--- a/app/models/media_asset.rb
+++ b/app/models/media_asset.rb
@@ -4,6 +4,9 @@ class MediaAsset < ApplicationRecord
   class Error < StandardError; end
 
   VARIANTS = %i[preview crop 180x180 360x360 720x720 sample original]
+  ENABLE_SEO_POST_URLS = Danbooru.config.enable_seo_post_urls
+  LARGE_IMAGE_WIDTH = Danbooru.config.large_image_width
+  STORAGE_SERVICE = Danbooru.config.storage_manager
 
   has_one :media_metadata, dependent: :destroy
   has_one :pixiv_ugoira_frame_data, class_name: "PixivUgoiraFrameData", foreign_key: :md5, primary_key: :md5
@@ -88,7 +91,7 @@ class MediaAsset < ApplicationRecord
         "/images/download-preview.png"
       else
         slug = "__#{slug}__" if slug.present?
-        slug = nil if !Danbooru.config.enable_seo_post_urls
+        slug = nil if !ENABLE_SEO_POST_URLS
         "/#{variant}/#{md5[0..1]}/#{md5[2..3]}/#{slug}#{file_name}"
       end
     end
@@ -166,7 +169,7 @@ class MediaAsset < ApplicationRecord
       when :"720x720"
         true
       when :sample
-        media_asset.is_ugoira? || (media_asset.is_static_image? && media_asset.image_width > Danbooru.config.large_image_width)
+        media_asset.is_ugoira? || (media_asset.is_static_image? && media_asset.image_width > LARGE_IMAGE_WIDTH)
       when :original
         true
       end
@@ -271,7 +274,7 @@ class MediaAsset < ApplicationRecord
     end
 
     def storage_service
-      Danbooru.config.storage_manager
+      STORAGE_SERVICE
     end
 
     def backup_storage_service
diff --git a/app/models/post.rb b/app/models/post.rb
index 5640391bd..6f851a4a9 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -8,6 +8,8 @@ class Post < ApplicationRecord
   NOTE_COPY_TAGS = %w[translated partially_translated check_translation translation_request reverse_translation
                       annotated partially_annotated check_annotation annotation_request]
 
+  RESTRICTED_TAGS = Danbooru.config.restricted_tags
+
   self.ignored_columns = [:pool_string, :fav_string]
 
   deletable
@@ -292,11 +294,11 @@ class Post < ApplicationRecord
 
   module TagMethods
     def tag_array
-      @tag_array ||= tag_string.split
+      tag_string.split
     end
 
     def tag_array_was
-      @tag_array_was ||= (tag_string_in_database.presence || tag_string_before_last_save || "").split
+      (tag_string_in_database.presence || tag_string_before_last_save || "").split
     end
 
     def tags
@@ -346,7 +348,6 @@ class Post < ApplicationRecord
     end
 
     def merge_old_changes
-      reset_tag_array_cache
       @removed_tags = []
 
       if old_tag_string
@@ -380,14 +381,8 @@ class Post < ApplicationRecord
       end
     end
 
-    def reset_tag_array_cache
-      @tag_array = nil
-      @tag_array_was = nil
-    end
-
     def set_tag_string(string)
       self.tag_string = string
-      reset_tag_array_cache
     end
 
     def normalize_tags
@@ -1298,7 +1293,7 @@ class Post < ApplicationRecord
   end
 
   def levelblocked?(user = CurrentUser.user)
-    !user.is_gold? && Danbooru.config.restricted_tags.any? { |tag| tag.in?(tag_array) }
+    !user.is_gold? && RESTRICTED_TAGS.any? { |tag| tag.in?(tag_array) }
   end
 
   def banblocked?(user = CurrentUser.user)
@@ -1312,7 +1307,6 @@ class Post < ApplicationRecord
 
   def reload(options = nil)
     super
-    reset_tag_array_cache
     @pools = nil
     @tag_categories = nil
     @typed_tags = nil
diff --git a/config/danbooru_default_config.rb b/config/danbooru_default_config.rb
index f5768ff15..bc5b4c840 100644
--- a/config/danbooru_default_config.rb
+++ b/config/danbooru_default_config.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+#
 # This file contains all the configuration settings for Danbooru.
 #
 # Don't edit this file. Instead, to configure your Danbooru instance, copy this