We are currently getting the following logon times for different desktop configurations:

- Windows 10 LTSB 1607 (non-GPU accelerated): 10-11 seconds

- Windows 10 LTSB 1607 (nVidia M10 GPU accererated): 14-16 seconds

- Windows 10 LTSB 1607 (nVidia M10 GPU accererated) with full application suite (Adobe CC, Office, Statistics, etc): 26-28 seconds

Our environment is similar to yours (Horizon 7.2; UEM 9.2; App Volumes 2.12). GPU drivers have some per-user setup that adds a few seconds no matter what, but we feel this is as good as it is going to get.

We've done the following to achieve this logon time:

1. Use W10 LTSB - much of the W10 fluff is stripped out
2. VMware OSOT
3. Disable as much user experience stuff as you can via Group Policy.
4. Disable OneDrive and Defender (local group policy is the only way for OneDrive)
5. Disable as many scheduled tasks as possible (there are tons and tons set to "at user logon")
6. Use QuickPrep or Instant Clones
7. Disable scanner redirection and unneeded Horizon client features.

Mark