hello and welcome to the forum,
that has already is the case, for many months now.
fwiw, i run a emby server locally to stream from a seedbox.
i do not use the vfs file cache, in effect --vfs-cache-mode=off
note: rclone has two vfs caches.
i wrote a short post about it here
--- one option is to use --network-mode, as this will prevent windows explorer from generating thumbnails.
--- @VBB has a way to prime, the vfs dir cache, hopefully IT can stop soon by and explain.