diff --git a/src/Monitoring/ThreadStats.coffee b/src/Monitoring/ThreadStats.coffee
index 1acc3cc5e..5a292d727 100644
--- a/src/Monitoring/ThreadStats.coffee
+++ b/src/Monitoring/ThreadStats.coffee
@@ -1,15 +1,22 @@
 ThreadStats =
+  postCount: 0
+  fileCount: 0
+  postIndex: 0
+
   init: ->
     return if g.VIEW isnt 'thread' or !Conf['Thread Stats']
 
+    if Conf['Page Count in Stats']
+      @[if g.SITE.isPrunedByAge?(g.BOARD) then 'showPurgePos' else 'showPage'] = true
+
     statsHTML = <%= html(
       '<span id="post-count">?</span> / <span id="file-count">?</span>' +
-      '?{Conf["IP Count in Stats"]}{ / <span id="ip-count">?</span>}' +
+      '?{Conf["IP Count in Stats"] && g.SITE.hasIPCount}{ / <span id="ip-count">?</span>}' +
       '?{Conf["Page Count in Stats"]}{ / <span id="page-count">?</span>}'
     ) %>
     statsTitle = 'Posts / Files'
-    statsTitle += ' / IPs'  if Conf['IP Count in Stats']
-    statsTitle += (if g.BOARD.ID is 'f' then ' / Purge Position' else ' / Page') if Conf['Page Count in Stats']
+    statsTitle += ' / IPs'  if Conf['IP Count in Stats'] and g.SITE.hasIPCount
+    statsTitle += (if @showPurgePos then ' / Purge Position' else ' / Page') if Conf['Page Count in Stats']
 
     if Conf['Updater and Stats in Header']
       @dialog = sc = $.el 'span',
@@ -37,35 +44,46 @@ ThreadStats =
       cb:   @node
 
   node: ->
-    postCount = 0
-    fileCount = 0
-    @posts.forEach (post) ->
-      postCount++
-      fileCount++ if post.file
-      (ThreadStats.lastPost = post.info.date if ThreadStats.pageCountEl)
     ThreadStats.thread = @
+    ThreadStats.count()
+    ThreadStats.update()
     ThreadStats.fetchPage()
-    ThreadStats.update postCount, fileCount, @ipCount
+    $.on d, 'PostsInserted', -> $.queueTask ThreadStats.onPostsInserted
     $.on d, 'ThreadUpdate', ThreadStats.onUpdate
 
+  count: ->
+    {posts} = ThreadStats.thread
+    n = posts.keys.length
+    for i in [ThreadStats.postIndex...n] by 1
+      post = posts[posts.keys[i]]
+      unless post.isFetchedQuote
+        ThreadStats.postCount++
+        ThreadStats.fileCount += post.files.length
+    ThreadStats.postIndex = n
+
   onUpdate: (e) ->
     return if e.detail[404]
-    {postCount, fileCount, ipCount, newPosts} = e.detail
-    ThreadStats.update postCount, fileCount, ipCount
-    return unless ThreadStats.pageCountEl
-    if newPosts.length
-      ThreadStats.lastPost = g.posts[newPosts[newPosts.length - 1]].info.date
-    if g.BOARD.ID isnt 'f' and ThreadStats.pageCountEl?.textContent isnt '1'
+    {postCount, fileCount} = e.detail
+    $.extend ThreadStats, {postCount, fileCount}
+    ThreadStats.postIndex = ThreadStats.thread.posts.keys.length
+    ThreadStats.update()
+    if ThreadStats.showPage and ThreadStats.pageCountEl.textContent isnt '1'
       ThreadStats.fetchPage()
 
-  update: (postCount, fileCount, ipCount) ->
+  onPostsInserted: ->
+    return unless ThreadStats.thread.posts.keys.length > ThreadStats.postIndex
+    ThreadStats.count()
+    ThreadStats.update()
+    if ThreadStats.showPage and ThreadStats.pageCountEl.textContent isnt '1'
+      ThreadStats.fetchPage()
+
+  update: ->
     {thread, postCountEl, fileCountEl, ipCountEl} = ThreadStats
-    postCountEl.textContent = postCount
-    fileCountEl.textContent = fileCount
-    if ipCount? and ipCountEl
-      ipCountEl.textContent = ipCount
-    (if thread.postLimit and !thread.isSticky then $.addClass else $.rmClass) postCountEl, 'warning'
-    (if thread.fileLimit and !thread.isSticky then $.addClass else $.rmClass) fileCountEl, 'warning'
+    postCountEl.textContent = ThreadStats.postCount
+    fileCountEl.textContent = ThreadStats.fileCount
+    ipCountEl?.textContent  = thread.ipCount ? '?'
+    postCountEl.classList.toggle 'warning', (thread.postLimit and !thread.isSticky)
+    fileCountEl.classList.toggle 'warning', (thread.fileLimit and !thread.isSticky)
 
   fetchPage: ->
     return unless ThreadStats.pageCountEl
@@ -76,15 +94,15 @@ ThreadStats =
       return
     ThreadStats.timeout = setTimeout ThreadStats.fetchPage, 2 * $.MINUTE
     $.whenModified(
-      g.SITE.urls.threadsListJSON({boardID: ThreadStats.thread.board}),
+      g.SITE.urls.threadsListJSON(ThreadStats.thread),
       'ThreadStats',
       ThreadStats.onThreadsLoad
     )
 
   onThreadsLoad: ->
     if @status is 200
-      for page in @response
-        if g.BOARD.ID is 'f'
+      for page, pageNum in @response
+        if ThreadStats.showPurgePos
           purgePos = 1
           for thread in page.threads
             if thread.no < ThreadStats.thread.ID
@@ -92,9 +110,9 @@ ThreadStats =
           ThreadStats.pageCountEl.textContent = purgePos
         else
           for thread in page.threads when thread.no is ThreadStats.thread.ID
-            ThreadStats.pageCountEl.textContent = page.page
-            (if page.page is @response.length then $.addClass else $.rmClass) ThreadStats.pageCountEl, 'warning'
-            ThreadStats.lastPageUpdate = new Date thread.last_modified * $.SECOND
+            ThreadStats.pageCountEl.textContent = pageNum + 1
+            ThreadStats.pageCountEl.classList.toggle 'warning', (pageNum is @response.length - 1)
+            ThreadStats.lastPageUpdate = new Date(thread.last_modified * $.SECOND)
             ThreadStats.retry()
             return
     else if @status is 304
@@ -102,6 +120,12 @@ ThreadStats =
 
   retry: ->
     # If thread data is stale (modification date given < time of last post), try again.
-    if g.BOARD.ID isnt 'f' and ThreadStats.lastPost > ThreadStats.lastPageUpdate and ThreadStats.pageCountEl?.textContent isnt '1'
-      clearTimeout ThreadStats.timeout
-      ThreadStats.timeout = setTimeout ThreadStats.fetchPage, 5 * $.SECOND
+    # Skip this on vichan sites due to sage posts not updating modification time in threads.json.
+    return unless (
+      ThreadStats.showPage and
+      ThreadStats.pageCountEl.textContent isnt '1' and
+      !g.SITE.threadModTimeIgnoresSage and
+      ThreadStats.thread.posts[ThreadStats.thread.lastPost].info.date > ThreadStats.lastPageUpdate
+    )
+    clearTimeout ThreadStats.timeout
+    ThreadStats.timeout = setTimeout ThreadStats.fetchPage, 5 * $.SECOND
diff --git a/src/site/SW.tinyboard.coffee b/src/site/SW.tinyboard.coffee
index 68103f82c..e6c18094c 100644
--- a/src/site/SW.tinyboard.coffee
+++ b/src/site/SW.tinyboard.coffee
@@ -23,7 +23,6 @@ SW.tinyboard =
     'Thread Expansion'
     'Favicon'
     'Quote Threading'
-    'Thread Stats'
     'Thread Updater'
     'Banner'
     'Flash Features'
diff --git a/src/site/SW.yotsuba.coffee b/src/site/SW.yotsuba.coffee
index 304174ebc..8d32a7cbd 100644
--- a/src/site/SW.yotsuba.coffee
+++ b/src/site/SW.yotsuba.coffee
@@ -1,5 +1,6 @@
 SW.yotsuba =
   isOPContainerThread: false
+  hasIPCount: true
 
   urls:
     thread:     ({boardID, threadID}) -> "#{location.protocol}//#{BoardConfig.domain(boardID)}/#{boardID}/thread/#{threadID}"