I'm using this one.
https://www.amazon.com/gp/aw/d/B07ZV2CJL2?psc=1&ref=ppx_pop_mob_b_asin_title
And it works out of the box on any popular distro. Tested on arch, fedora, popos. Besides it has support as a monitoring mode for aircrack-ng.
I don't know how accurate this is so YMMV but I ended up buying a wifi+bluetooth receiver for my PC and the audio lag is almost non existent, before this I used some cheap receiver that came with another pair of headphones that would pair any other headphones I owned.
I own the Sony earbuds (god their naming scheme sucks so bad that 2 years later I still can't remember the name) and the Boss QC 35. I played CS and OW where audio is real important and never really noticed a delay after switching.
I have one that works. It is 50$ but it has WiFi 6 and bluetooth 5. And it works with ubuntu. https://www.amazon.com/TP-Link-Bluetooth-Ultra-Low-Archer-TX3000E/dp/B07ZV2CJL2/ref=mp_s_a_1_4?dchild=1&keywords=pcie+wifi+card&qid=1599957131&sprefix=pcie+&sr=8-4
What is the exact brand and model of your Wifi Router and your Internet Modem?
Also, why did you build a new computer and use a Wifi adapter from 10+ years ago?
Your Wireless N PCI Express adapter only supports upto Wifi-4 standard and we are now in the Wifi-6 "era". You should really be using an adapter that at least support Wifi-5 (AC class).
You should use this:
or