CPU is not that bad guys. it runs at 3.5 Ghz, has 16 threads, 8 cores, and plenty of IPC gains over jaguar.
just run any current gen game on your pc right now and see how much the cpu is being utilized. no one is using the CPU. DF said the same thing about starfield because it didnt run well on a the zen 2 3600 on PC. Well, Bethesda optimized and shipped a 60 fps mode a year later. if bethesda can do it.....
the main problem will be multithreading all the NPC and traffic simulations and if there is one studio that can do it, its rockstar. remember what that ex-ND/Rockstar artist said. Rockstar has dedicated 30-40 person teams just to handle small animations like picking up ladders and climbing while ND's entire animation team was 30-40 people. rockstar will just throw numbers on it. its 3000 devs. 7 studios all working on one game for 8 years. A lot of them programmers. if they can make rdr2 run on PS4 with those visuals, draw distance and lighting, they can figure out multithreading.
i havent seen any destruction either. so it has to be just NPC routines and traffic. plus whatever CPU cost is on RT which they can always disable for the performance mode like AC shadows did last year. though, even they've figured out how to run RTGI at 60 fps on base consoles with black flag.