Azure Virtual Desktop - Problems Attempting Locked down Exam Environment

UPDATE:

the Edge issue was an easy fix I overlooked. I just needed to enable this setting

user --> Admin Template --> Microsoft Edge --> Hide the First run experience and slash screen.

I was able to "fix" the 10min of preparing windows and usrlogon.cmd by re-enabling the settings

User -> Admin Template --> System --> Prevent access to the command prompt

The user will login quickly now. It seems that either FSLogix or the UsrLogon required the command prompt, and turning that back on made the difference.

BUT...  because of the unique setup I'm attempting to build here, I don't want any files on the user's desktop kept. And I think FSLogix is doing this still in the background, but I can't figure out how to stop it.

If I create a word document (file1.docx) on the desktop (Server6) and if I signout. The next time I may be on Server11 and I don't see that file. But if I end up back on Server6 again, there's file1.docx sitting on the desktop again.
This shouldn't be happening tried to stop keeping local directory after logoff. Or clear cache on logoff, delete cached copies of roaming profiles, don't save settings at exist, 

I'm quite close, but just a couple things are in my way. The fact that it will leave a file on the desktop (which we don't want), and some way to remove all the 'pinned apps' in the start menu.