Help with nextcloud and rclone?

I have mounted rclone /drive

nextcloud external storage

when i start to download some big file
i see it in bmon that my vps is downloading it and serving to me.
But when i cancel it, it still is downloading until whole file is loaded somewhere into memory.
I have to do service php7.0-fpm restart to make it stop downloading.
I also use nginx but service nginx restart do nothing.
Please help thanks.