...
Note that your-keypair_root.pem should be owned by root with 400 in permission, sshfs# need to be added to the account information, and fuse.sshfs needs to be changed to fuse.
Enhance access speed with no encryption
If you want to enhance its access speed even though its security is poor than before, you can stop encryption by adding Ciphers=arcfour,Compression=no like below:
...