I have a single folder (no subfolders) with 650,000 files in it, and the Win10 explorer is plenty fast if nothing in that folder is currently changing. Even if

I have a single folder (no subfolders) with 650,000 files in it, and the Win10 explorer is plenty fast if nothing in that folder is currently changing. Even if a single file access time changes it will spend 20-30 minutes trying to display the change, despite the access time not being displayed for any file. If you open the folder 1 second after the file access time is updated, it's instantaneous, as before. There's good and bad here. NTFS is a HELL of a lot better at handling stupid amounts of files in a folder like this than it used to be. But maybe it could handle a single file attribute change without losing its kind for 30 minutes.