Struggling to maintain 60fps and thats without Mike the robot, creatures and other goodies in. Even Fable is kicking back. TAA in was a big gain took some scenes from 200% GPU down to 120% (still over but considerable gain). Of course what's exactly on screen has a massive impact not just trees and imposters (tried those 3 times and gave up, after some thought 4th time worked good enough) but!, as essentially the terrain,sky,shadows,lighting,clouds,water is 1 massive shader (2Mb! as inline for speed) ray marching them from grazing angles can punish fps. I cant lie visuals are AAA - which is staggering. Still not looked at any code but tell it what to look for optimise wise and indeed it does and especially Fable goes off and find extra rabbit holes to explore which is good!
A few more things to try though from a very empty bag of tricks. What do we have though? You can see maybe 10,000 trees on screen (yes most are a black pixel!), you can get right into the grass and it moves as you pass and each blade is vertex lit. Looks (expletive deleted)ing better than most of my holiday snaps!. Final push before rapier physics and Mike goes in. Then linking back to whisper and the local LLM - see we got there in the end just via a 3d engine! LOL!