It looks fast, but sometimes it's not actually saving it. Create a lot of files (for example, take many photos) and try to delete them with the native file manager in Android. You'll see that it's fast, but when you check it afterwards you'll find that these files weren't actually deleted. Like with the Pocophone, it seems something went wrong with the external card management. I wouldn't recommend anyone to upgrade since this is beyond an annoyance, it's major (it can lead to data loss).