tar-fs vs node-tar benchmarks

node-tar.js

var tar = require('tar');
var fstream = require('fstream');

var input = '/Users/maf/Downloads';
var reader = fstream.Reader({type: "Directory", path: input});
var pack = tar.Pack();

reader.pipe(pack).pipe(tar.Extract({path: '/tmp/destination-node-tar'}));

output

time node tar-fs.js 
real  0m34.261s
user  0m11.316s
sys	  0m16.472s

time node node-tar.js
real  6m6.123s
user  3m8.837s
sys   2m43.491s

tar-fs.js

var tar = require('tar-fs');

var input = '/Users/maf/Downloads';

tar.pack(input).pipe(tar.extract('/tmp/destination-tar-fs'));

I have a problem with tar-fs. when I try to tar a folder with multiple directories and files up to a total of 37GB it completes without errors, But when I try to extract the files I only get files back up to approximately 8GB. I'missing files.