Emby and rclone are slow

[esmailelbob 0]

I have an Emby media server where storage is attached via rclone mount. The backend is served through an app called Altmount (similar concept to nzbdav). My goal is to get movies to start playing in 1 second or less. Currently there's a noticeable delay on first play before Emby can start streaming the file. I tried kodi for emby and with webdav and webdav was noticeably faster so is there anyway or config that i can use in rclone to overcome this emby headings and make it faster? 

My rclone setujp is:
```
rclone:
  path: /config
  password: ""
  salt: ""
  rc_enabled: true
  rc_url: ""
  rc_port: 5573
  rc_user: admin
  rc_pass: admin
  rc_options: {}
  mount_enabled: true
  vfs_name: altmount
  mount_options: {}
  log_level: ERROR
  uid: 1000
  gid: 1000
  umask: "002"
  buffer_size: 32M
  attr_timeout: 5s
  transfers: 32
  cache_dir: /config/cache
  vfs_cache_mode: full
  vfs_cache_poll_interval: 10s
  vfs_read_chunk_size: 32M
  vfs_cache_max_size: 100G
  vfs_cache_max_age: 8760h
  read_chunk_size: 32M
  read_chunk_size_limit: 2G
  vfs_read_ahead: 2G
  dir_cache_time: 5s
  vfs_cache_min_free_space: 1G
  vfs_disk_space_total: 1G
  vfs_read_chunk_streams: 4
  allow_other: true
  allow_non_empty: true
  read_only: false
  timeout: 1h
  syslog: true
  no_mod_time: true
  no_checksum: true
  async_read: true
  vfs_fast_fingerprint: true
  use_mmap: true
  links: false
```