The following registry key used to fix RRAS DHCP issues also resolves issue were Virtual IP's are not assigned by DHCP clients on Windows 2019 RDS host.
reg add "HKLM\SYSTEM\CurrentControlSet\Services\Dhcp" /v RequiredPrivileges /d "SeChangeNotifyPrivilege"\0"SeCreateGlobalPrivilege"\0"SeImpersonatePrivilege"\0 /t REG_MULTI_SZ /f