I'm running an i9-13900k with liquid cooling in a desktop and getting 24/192 files to DSD512 is pushing the limits...This is without an Nvidia GPU. I may need to add one eventually.
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I'm not familiar with HQPlayer, nor it's algorithms, but reading the website, it's capable of offloading to nVidia GPUs. This would be a more cost effective way of speeding things up than buying a faster CPU. A decent nVidia GPU would cost a few hundred dollars. If your existing machine has a beefy enough power supply and an available PCIe x16 slot, a $300 GeForce 4060 would speed things up much faster, dollar for dollar, than upgrading an entire machine with a newer Intel CPU.