I don’t know how valid Frame Chasers is (Youtuber) but he claims AMD Zen CPUs including X3D chips have microstutter with Rust specifically and that Intel CPUs don’t have these hitches with that specific title.

Well you’ll need to plop down a cool $4500 for a 16 P-Core Intel 8444H CPU, and it doesn’t include the RAM or the motherboard…Intel will give you to you, if you pay through the nose for it.