RTXGI and DLSS

Watched the Nvidia session

but can someone please clarify
Are RTXGI and DLSS Nvidia specific features not available on the Epic release of UE4.x?

Yes, RTX and DLSS are Nvidia specific, available at several custom Unreal branches that Nvidia itself maintains. Check here: Unreal Engine 3D Creation Platform | NVIDIA Developer.

Thanks !

You’re welcome!