Performance issue with Ansible when using 'stat' module

Ansible perf PoC

pwd : /home/tvass/Documents/work/ansible-perf
uname : Linux XXXXX 4.17.9-200.fc28.x86_64 #1 SMP Mon Jul 23 21:41:29 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Ansible version : ansible 2.6.2 (same issue w/ 2.5.8 and  2.4.6.0)

1) Generate 300 random files

---
#!/bin/bash
# Generates ten data files, each 300 MB in size and filled with random data.

[[ ! -d "data/" ]] && mkdir "data/"

for i in {1..300}; do
    dd if="/dev/urandom" of="data/file${i}" bs=1024 count=10240
done
---

2) Time with sha256sum

$ time sha256sum data/file*
[...]
real	0m9.400s
user	0m7.469s
sys	0m0.608s

3) Time with Python

---
#!/usr/bin/env python

import hashlib
import sys

def sha256_checksum(filename, block_size=65536):
    sha256 = hashlib.sha256()
    with open(filename, 'rb') as f:
        for block in iter(lambda: f.read(block_size), b''):
            sha256.update(block)
    return sha256.hexdigest()

def main():
    for f in sys.argv[1:]:
        checksum = sha256_checksum(f)
        print(checksum + '  ' + f)

if __name__ == '__main__':
  main()
---

$ time ./hash.py data/*
[...]
real	0m8.292s
user	0m6.800s
sys	0m0.630s

4) Time with Ansible

---
- hosts: localhost
  gather_facts: false
  strategy: free
  tasks: 
   - name: Check if package is present
     stat:
       path: "{{ item }}" 
       checksum_algorithm: sha256
       get_attributes: no
       get_mime: no
       get_md5: no
     with_fileglob:
       - "/home/tvass/Documents/work/ansible-perf/data/*"
---

$ time ansible-playbook cs.yaml
[...]
real	0m41.888s
user	1m10.612s
sys	0m11.982s