Well, most of us know that, but it’s not the problem of Plex, it’s the way rclone handling the file and cache system.
Because if you look at other mounting option, like node-gdrive and ocamlfuse, they cache the list of the file in the beginning as list and that’s why Plex read from that list and no access directly to the file for each scan.
Which this way Plex not keep repeatedly downloading same file over and over.
There is a bounty on this, but still no word from @ncw, maybe he’s busy.