Z390 Designare - Dual boot setting issues

I have two separate SSDs and I am trying to dual boot between windows 10 and OS.

2 of the settings per the OS guides state: Above 4g encoding - enabled CSM support - disabled

However, when I set these and try to boot to Windows SSD, it does not find the drive unless I disable both of these settings.

Has anyone else had this issue or found a resolution? I hadn’t seen this issue come up before for this

submitted by /u/Spenro
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