>>394598884
Doing this now with my Quest 2, the main issue is going through too many layers kn the Quest itself. It used to be an experimental feature, now its in the normal audio options, but has SEVERE lag past even anything Airlink does, and I think it's because it's trying to do too much at once.

The solution is putting your earbuds directly through the PC, and setting them as the output in-app. Like so:

1. Connect earbuds to PC. Optionally, set them as your main output device. 
2. Put on headset
3. Turn your headset volume all the way off/to mute to deactivate the onboard directional speakers
4. Go into Airlink (Presumably, likely works with Link too)
5. (Optional) Go into Audio settings here if you want, set output from "Headset" to "Windows Default". Sometimes I have it work, sometimes not, don't really need this sound.
6. Go into SteamVR. Open the Steam menu, go to the 'Audio' tab under the settings to the right, and set output either as Windows Default, or as whatever your earbuds are listed as. It should give you the full input list from your PC, and they'll be there; Quest often sets the input/output automatically as "Oculus Virtual Headset" or whatever on launch. 
7. This should do it! With the headset itself muted and this set, you should be streaming the audio directly to the buds, and the headset handles the game on its own.

With Airlink, I've found no lag this way so far, at least not past whatever Airlink naturally has, it syncs up. The technology really has come a LONG way, if you have a good router/wifi at least, and this way it's totally wireless. I'd been using a pair of studio headphones plugged through into the headset and this is still even better than having that wire/weight of the headphones alone to contend with. Being truly wireless like this is really freeing, especially with shooters/movement games, and I really can't imagine anything else anymore.

Hope this works. Have fun, anon.