master auth delay

Description of Issue/Question

using gitfs (pygit based) for states and external pillar, we are experiencing major performance drawback, the ratio from locally stored states and pillar and a gitfs based storage is about x5 (talking about time to complete setup). Local storage taking about 7/8 minutes when gitfs based master takes about 45 minutes to achieve the exact same setup. :(

for now I am just wondering (without real doubt though) if I am the only one to experience this ? I am quite sure I am, but I wanted to be sure first. Then I will be adding debug log and all this in this issue for tracking root cause.

So : Anyone experiencing this kind of performance using gitfs for state and external pillar ?

Steps to Reproduce Issue

(Include debug logs if possible and relevant.)

Versions Report

(Provided by running salt --versions-report. Please also mention any differences in master/minion versions.)
master / minion in latest (2018.3.2) as :

Salt Version:
           Salt: 2018.3.2
 
Dependency Versions:
           cffi: 1.11.4
       cherrypy: Not Installed
       dateutil: 2.2
      docker-py: Not Installed
          gitdb: 0.5.4
      gitpython: 0.3.2 RC1
          ioflo: Not Installed
         Jinja2: 2.9.4
        libgit2: 0.26.0
        libnacl: Not Installed
       M2Crypto: Not Installed
           Mako: Not Installed
   msgpack-pure: Not Installed
 msgpack-python: 0.4.2
   mysql-python: 1.2.3
      pycparser: 2.10
       pycrypto: 2.6.1
   pycryptodome: Not Installed
         pygit2: 0.26.3
         Python: 2.7.9 (default, Jun 29 2016, 13:08:31)
   python-gnupg: Not Installed
         PyYAML: 3.11
          PyZMQ: 14.4.0
           RAET: Not Installed
          smmap: 0.8.2
        timelib: Not Installed
        Tornado: 4.2.1
            ZMQ: 4.0.5
 
System Versions:
           dist: debian 8.11 
         locale: UTF-8
        machine: x86_64
        release: 4.15.18-1-pve
         system: Linux
        version: debian 8.11