You will always need bounce cards in certain situations, for instance creating area lights. But yes I understand setting up HDR lighting isn’t quite straightforward as it may be, for instance what that guy did in the tutorial was setup a sphere and then had the Skylight capture it, does this break light information found in 32 bit files? I’m not sure yet. on the the other hand if you plug in the HDR directly into skylight you are reserved to only 512 resolution because of the format limitation in UE which may be too low for light information. It’s still ‘out there’ for me.