>>106633890
PCIe 5.0 makes no difference, see >>106632538 and won't for many years in the consumer space until the point any board and CPU that can installed in it now will be long outdated. What's the issues with your audio (and did you install the updated drivers)? If you're interested in HQ audio the money you'd spend on a fancier board could get a nice external USB DAC like this:
https://www.amazon.com/LEAUDIO-Black-Pearl-Headphone-Amplifier/dp/B0F37L485V
https://www.audiosciencereview.com/forum/index.php?threads/review-of-trn-black-pearl-portable-usb-dac-headphone-amp-with-10-band-peq.64331/
that will have a higher SINAD resolution/lower noise floor by physically isolating the chip from the RF/EMI environment inside the PC case.