Have you done any stress tests on the system? And if you did did you monitor CPU power?
I have a gen 4 and at least whenever the CPU and GPU are active the CPU runs absurdly slow. I havent tested just CPU loads, but rendering a video where the CPU was 100% loaded and the GPU was about 5% loaded my CPU would drop to only 25 watts and throttle hard. With throttlestop I’m able to get 35 watts at the very most out of my CPU for long loads. I’m curious of they’ve done anything for the newer models so the CPU can actually stretch it’s legs. It really sucks buying this i9 but having it perform worse than an i5. Even if there’s PLENTY of thermal headroom.