Like several of you, I was a Q2 user, and now a Q3. I have a 9700 K at 5 GHz plus a 3080 TI so quite a bit less of a system than you 4090 folks. I too am interested in clarity, but I fly low and like to see out the side window so I typically use either ASW or SSW with VD. We all have different flying focus issues.
A couple of Tips:
I’m old enough to have gotten cataract surgery this year and my vision is really quite clear close in so I didn’t imagine that I would need my glasses at all for the Q3, However, I found that using my new glasses that still improve my far vision help the clarity of the Q3. Therefore, I suggest that you make sure about your own personal vision quality by getting a current eye prescription for whatever focal length the Q3 has, which I imagine is, something like one and a half to 2 m. I’m going to get the Q3 prescription lenses available from zenni.com at $49 especially since that will protect the Q3 lenses from scratching.
Second tip to possibly try out DCS World(free) with your hardware as I do especially since it now supports openXR and VDOXR on their multi threaded version. I switch back-and-forth between MSFS and DCS. DCS has a lot faster frame time since it has fewer calculations per frame so it’s actually possible to get to 72 or 80 frames per second and see what that looks like in comparison to MSFS. Unfortunately DCS does not have good antialiasing but I learn comparing the two sims. With Link cable, I can get amazing crisp images as well as fluid sideviews.