NEW(3/22/2024) UE5.5+ feedback: Please Invest In Actual PERFORMANCE Innovations Beyond Frame Smearing For Actual GAMES.

and Epic is where for them?

In all fairness, the UE5 documentation is an underrated source and and public performance of Fortnite shows how iffy the new UE5 features can be.

The engine’s new features just appeal to lazy developers/studios.
The first major third party AAA title using Lumen, Nanite and VSMs performs like absolute trash like Immortals of aveum…Remnant 2 which doesn’t even have Lumen.

Although I really do blame the Remnant 2 studio for their poor performance.
Absolutely incompetent studio/developers.

But many people could give a crap about new features and rather have money and innovation spent on more optimization the processing code of the new features like Lumen, VSMs and Nanite.