I don't think plague tale 2 can be used as a benchmark for CPU utilisation. It's Asobo's own engine, it's very good, but the engine does have moments of stutter infrequently as it loads a section as you play. I'm not at 4K but at 3440x1440 max everything and DLSS QUality it's hovering around the 100fps mark usually, whilst only in one instance of the whole game did it drop to 51fps which was when you have to push that cart around a massive fire outside, but even then that was GPU bound not CPU.
Same with Spiderman, their own engine, but regular CPU spiking and generally high CPU usage for seemingly no reason.
My recent revelation/discovery is that Doom Eternal's engine is the only engine out right now that is pretty much 100% optimised and should be the benchmark engine for all testing for everything lol. That engine is over 150fps without any DLSS and with RT enabled in ultra nightmare quality....