If your Windows 11 File Explorer feels sluggish, especially when opening folders crammed with documents, photos, or videos, you’re not imagining things. A default feature called auto-discovery scans folder contents to determine optimal display settings, and while this sounds helpful in theory, it’s been wreaking havoc on performance since the Windows XP era. Fortunately, a simple registry tweak can prevent File Explorer from wasting time scanning files, delivering noticeably snappier folder navigation. What Windows 11’s Automatic Folder Type Discovery does It’s a smart feature that makes File Explorer Tashreef Shareef / MakeUseOfCredit: Tashreef Shareef / MakeUseOf To understand why this fix works, you have to look at what Windows is actually doing behind the scenes. When you double-click a directory, Windows 11 doesn’t simply read the filenames and show them to you. Instead, it pauses to perform a content audit. It furiously analyzes the file headers to answer a question you never actually asked: whether the folder is full of music, photos, documents, or videos. If it detects MP3s, it switches the view to Music mode; …