Found this channel, Threat Interactive, some time ago and have been watching the videos. He uses debugging tools to go step by step on how each frame is generated, explaining bottlenecks, things that reduce performance (like computing some stuff more than once, out of order, etc) and things that make the final frame look bad (usually bad anti aliasing)
The dude gets very mad about the state of current games’ pipelines, mainly due to how Unreal and Nvidia have fucked things over for their profit - and really, when we take graphics from today and compare with games from 2016, it’s easy to see downgrades in quality AND performance.
Oh hell yeah. This is not being addressed enough. So many devs are optimizing this engine terribly for their product when there are changes you can make to a single .INI file that will reduce the hardware requirements of most UE5 games to something even my ancient toaster can run