Slow Boot traced to Workstation service with Mapped drives

I began having slow boot times recently and I tracked it down to the Workstation service using MSConfig, and then to having mapped drives that don't connect at boot because they map through VPNs that don't connect when Windows starts.

It is direct cause and effect - I map those drives and it slow boots - I disconnect those drives in Windows Explorer and it fast boots.

There are no domains involved. 

Also when I map a drive, it completes as the mapped drive shows up in Win Exp and works, but the dialogue that says Attempting to connect... keeps spinning and never stops until I click on cancel.  The mapped drive then remains in Win Exp and works.

Win 7 Pro 64-it

ASUS Z-87A

Intel i7 4790K

16 GB Corsair

I have been working with those mapped drives for well over two years through this OS and never had this issue. 

Performance Degradation shows PreShellInit and ID108

What I did.

I uninstalled and then hid KB3035583, KB2952664, and KB3021917, which are the modifiers for updating to Win 10. KB2990214 was not installed.  I am not updating this OS to Win 10.  I have Win 10 running on another machine as part of the insider program.

I uninstalled  25 updates that came I after I initially did a clean install on 1 Aug 2015.

I uninstalled ACT Pro 2010 and its SQL installs.  I am no longer using it and it wasn't working quite right.

I uninstalled maybe one or two other things and uninstalled and reinstalled a few things.

All of this with copious cold starts, restarts, and cleaning left over registry entries with CCleaner, which I carefully looked at before removing them.

I have since reinstalled the regular updates, not the Win 10 prep updates.

Oh and of course, full virus checks with MSE, and multiple sfc /scannow at the elevated command prompt

The work around is to only remap the drives as needed after the VPN is connected, but why all of a sudden do I have to do that?

• System

  - Provider

   [ Name]  Microsoft-Windows-Diagnostics-Performance

   [ Guid]  {CFC18EC0-96B1-4EBA-961B-622CAEE05B0A}

   EventID 108

   Version 1

   Level 1

   Task 4002

   Opcode 33

   Keywords 0x8000000000010000

  - TimeCreated

   [ SystemTime]  2015-09-06T03:33:58.687168700Z

   EventRecordID 417

  - Correlation

   [ ActivityID]  {03319C40-F800-0000-A5DB-AC5E54E8D001}

  - Execution

   [ ProcessID]  1632

   [ ThreadID]  4804

   Channel Microsoft-Windows-Diagnostics-Performance/Operational

   Computer EQ-6

  - Security

   [ UserID]  S-1-5-19

• EventData

  StartTime 2015-09-06T03:30:25.702800300Z

  NameLength 13

  Name PreShellInit

  TotalTime 79681

  DegradationTime 79534