Opened up a few games like Half-Life 2 (VR mod). Generally impressed but I think I need to do some tweaking. Even at maximum in-game detail settings, there's a noticeable shimmering or fuzziness on the edges of objects (except for the Oculus desktop which is sharp), even close up. I'm using an i9 Intel CPU with an RTX 3070 GPU. Maybe this is just the way it is with the Meta Quest devices (this is my first real VR experience outside of that iPhone VR device mentioned earlier which seemed like a gimmick, almost a cheap toy) and my expectations are unrealistic. Coming from 4K on flatscreens probably isn't helping in my delusional state
I'm using a Link cable and the Meta Quest Link software shows USB port speed of 2.1 Gbps which seems more than enough. Any tips for getting the best visuals in PCVR with acceptable frame-rates on my rig or any tips/tweaks in general?
If you moved from 4k then there is nothing that will match it. If you are using Quest 2/3 then you can expect clarity wise something close to 900p res. With Pico4 it is much closer to 1080p and with beyond something like 1440p
If you have quest then the best advice is to drop the cable and use Wifi6 router and go wireless and get yourself elite strap with battery this will give you around 5 hours wireless which is plenty. Quest either way uses compression even with link cable and at 900p clarity you won't notice the difference. In fact you can use usb 2.0 with link cable and it will work jus the same.
As for tips for performance. There isn't much you can do really. Resolution is the key, so you have a choice between high res and lower framerate or reduced clarity and better framerate.
I think they key here is "VR muscle" aka how much you can bear. The more you use VR the muscle will grow and you will be able to play in much worse situations. I am at the point where i can even play 25fps games on VR due to how it splits head rotation framerate from actual game framerate and i have 0 issues with it.
Honestly the split between camera and game framerate should be something normal games have. It would be much much much much smoother experience with it.