Creative Cloud.exe =onOSstartup=false not working?

Hi

I am trying to disable the Creative Cloud application from starting up on logon

The reg key for this is located at: HKLM\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run

the key in there is: "C:\Program Files (x86)\Adobe\Adobe Creative Cloud\ACC\Creative Cloud.exe" --showwindow=false =onOSstartup=true

logic would suggest changing the =onOSstartup value to false would stop the application from starting on login

Sadly it does not. I cannot find a list of parameters to check if there is any other value's I can use to disable this

deleting the key entirely prevents the application from starting at login but if it updates it could inject the key in there again and thus un-doing my start up setting

I have also tried deleting the =onOSstartup parameter completely but no change as it still starts on login