I apologize up front if it is an incorrect forum for that but I've figured that it might be worth a shot.
We are working on Horizon 7.8, Instant Clones. Appvolumes 2.16, UEM 9.7, vCenter 6.7 U2 and Windows 1809 LTSC. We have recently discovered that our current image has some problems with some various Windows components, for example bitlocker, recent items and jump lists etc so we decided to build brand new image however we skipped using VMware OSOT and just did basic optimization manually. It included disabling unnecessary services, cleaning up startup, task scheduler etc. We are attaching at most 5 appstacks ( 4 combined applications appstacks and 1 Profile only writable). I have published the pool and almost right away seeing that logon time jumped from 40-50 seconds to 80-90 seconds. We are not using Mandatory profiles, instead we are doing Profile only writable and folder redirection through UEM.
I would like to ask the community and see if you might have any instructions/guideline on optimizing the image without OSOT and any possible tips/tricks on how to get the logon times at least to the 40-50 level or less. We are using all flash based Pure storage, newest C-Series UCS servers with Nvidia grids and I feel like we are not even close to what it should be.
Any help would be very much appreciated