that depend of the codecs you have installed in your system and if you have enabled preview of these files in file explorer.
Tested so far on a system with no extra codecs (just what comes with Windows) and one with extra codecs, so that may not matter. I don't use preview.
18334.19h1_release.190205-1505 nothing bad seems to be happening. anyone having problems? this is early beta of windows 20. edit: is the other ring the same? I wish they'd do something with MS Launcher for Android soon.
well what do u think they are going to do next? think about it this is quite different from Win 10 Home 1809.
explorer always hangs. make sure to use separate processes. edit: turn of all previews etc.. that is what makes it hang. or use menus in apps. or use powershell especially for copying files in bulk. explorer is constantly checking with OneDrive and creating thumbnails and doing this and doing that. it's very slow. If I use explorer a lot I always have to reboot and do chkdsk. Cortana doesn't even work IMO. it works in Edge.