Windows 10: Win10 Ent LTSB (1607) Minimize Startup, eliminate "idle" prior to app

Hello,

I'm looking for pointers, advise, help, minimizing the Windows 10 boot time and eliminating an idle window between desktop launch and start of an application.

Setup Hardware:
Intel E3950 (1.6Ghz, 4 cores)
2x 4GB memory
Samsung SATA SSD
Two custom PCIe devices (yep, drivers for those are having an effect on startup)
Custom motherboard

Setup Software:
Windows 10 Enterprise 64bit LTSB (1607)
Setup will be running one homebrew application only, desktop is not needed.

Main goal is to bring up the system as quickly as possible. Drastic measurements are welcome, I can always backpaddle.
The application will launch automatically.

I already killed a pile of services (mostly via registry), trimmed drivers available on system, removed Windows features.
Boot-time is fairly unimpressed at ~23s to see first signs of the desktop.
(I'll dump the modifications made so far in another post below.)

The second issue is a large delay between the loaded desktop and any app starting. I cannot figure out what is causing this.
Ran performance analyzer against it and no major activity is recorded. Maybe I am reading it wrong.
It may help if there is a way to prioritize items int the startup routine?!

Many thanks.

:)

 

windows 10 Driver digital signature

Is the driver' digital signarure(usb interface hardware) the same between

Win10 IoT Ent LTSB 2016 Value version and Win10 IoT Ent LTSB 2016 High End version.

 

Windows 10 can't install Media Feature Pack

This is a Consumer-specific forum.

You will find appropriate support for Win10 Enterprise [LTSB or not] in these forums =>

https://social.technet.microsoft.com/Forums/en-US/home?category=Windows10ITPro

PS: Maybe the fact that you're NOT running Win10 1607 OS Build 14393.1066 has something to do with it?

 

GPO entries optimized for security and disabling Windowsfeatures.
Cleaned up Scheduled System Tasks

Windows Services Disabled:
+ Windows Search
+ Themes
+ Program Compatibility Assistant Service
+ Intel Content Protection HDCP Service
+ Intel Content Protection HECI Service
+ Intel Graphics Control Panel
+ Connected User Experiences and Telemetry
+ Smart Card
+ Smart Card Removal Policy
+ Sync Host_?????
+ Sync Host Service
+ AllJoyn Router Service
+ Wallet Service
+ Retail Demo Service
+ Phone Service
+ Maps Broker Service
+ Connected Device Platform User Service
+ Connected Device Platform Service
+ Windows Biometric Service
+ Geolocation Service
+ Windows Live ID Service
+ XBox Gaming Protocol Service
+ XBox API Service
+ Xbox Game Save Service
+ XBox Authentication App Manager
+ Windows Media Player Network Sharing Service
+ Delivery Optimization Service
+ Data Collection Publishing Service
+ DMW App Push Service
+ BITS Background Intelligent Transfer Service
+ AppV FSFilter HSM Service
+ AppV FSFilter Activity Monitor Service
+ AppV Virtual File System Service
+ AppX Client License Service (ClipSVC)
+ AppX Deployment Service (AppXSVC)
Driver Services Disabled:
+ LSI 3ware SCSI Storport Driver
+ PMC-Sierra Storport For SPC8x6G SAS/SATA
+ Adaptec SAS/SATA-II RAID Storport's Miniport
+ Chelsio iSCSI VMiniport Driver
+ Chelsio Virtual Bus Driver
+ HP Smart Array SAS/SATA Controller Media
+ Mellanox InfiniBand Bus/AL
+ Mellanox Kernel WinMad
+ MellanoxKernel WinVerbs
+ Mellanox NetworkDirect Support Filter
+ LSI Fusion-MPT SAS Driver
+ LSI SAS Gen2 Driver
+ LSI Avago SAS Gen3 Driver
+ LSI SSS PCIe/Flash Driver
+ MEGASAS RAID Controller Driver
+ LSI MegaRAID Software RAID Driver
+ MLX4 Bus Driver Mellanox
+ NVIDIA® nForce(TM) RAID Driver
+ NVIDIA® nForce(TM) Sata Performance
+ Dell/LSI PercSAS2i Driver
+ Dell/LSI PercSAS3i Driver
+ Promise SuperTrak EX Driver
+ SiS RAID Stor Miniport Driver
+ SiS AHCI Stor-Miniport Driver
+ VIA RAID DRIVER FOR AMD-X86-64
+ VIA StorX RAID Controller Driver
+ BCM Function Device Driver
+ BCM Function 2 Device Driver
+ QLogic Gigabit Ethernet VBD
+ QLogic 10 GigE VBD
+ Marvell Flash Controller Driver
+ CIRClass IR data exchange driver service
+ MS CDROM Driver Service
+ MS ATAPI Driver Service
+ AMD XATA filter driver service
+ AMD SBS AHCI Service
+ AMD SATA Support Service
+ AMD Primary Processor Module Service
+ AMD K8 CPU Support Service
+ Firewire 1394 Service

MS Features Removed:
+ Microsoft-Hyper-V-Common-Drivers-Package
+ Microsoft-Hyper-V-Guest-Integration-Drivers- Package
+ Microsoft-Windows-Printing-XPSServices- Package
+ Fax Services Client Package
+ SMB1 Protocol
+ Internet Printing Client
+ Work Folders Client