Hello: I am using the CC4 and want to use it with Unity (latest version).  I create an HDRP project and import my CC4 character as per web site instructions.  All works fine.  Problem is the character is of poor quality.  Hair does not look natural, face looks somewhat cartoony, and the shadows around the shoulders flicker getting dark and lighter.  When  I save the project and reopen all the materials are pink.
When I export the character for Unreal and import in Unreal all works great.
Problem is I use Unity and not Unreal engine.
Anyone have any ideas as to what is going wrong.
Thanks in advance for any help