There should be the possibility of streaming files, because the way it is, for those who have limited packet of internet data is very bad, considering that when accessing an encrypted folder, all the files inside it are downloaded in a totally unnecessary way, because sometimes we just need to look at a single file.
What should be done is something like OneDrive (from Microsoft). When accessing a folder, you should load thumnail from all files without the need to download, and so we click on a file, the download will be done for that, and for nearby files (5 files will be downloaded next to the file which was downloaded).
And it’s not just a matter of “data packet”, is that when there are many files in a folder, once the folder is opened, it absolutely crashes everything, precisely because it has many files to be processed, and because all the files are being downloaded simultaneously.
Excuse my English, I’m not native.