I’m thinking ofn upgrading my GPU to something a bit better, I currently have a 3080ti paired with an i7 11700k using a G2. Although its not a bad setup its just not quite there with the graphics quality and occasional glitches. I’ve had the 3080ti about 18 months now and paid £1300 for it which wasn’t a bad deal at the time, if I sell it I’d probably get £500 or so for it.
Would a 4080 improve my game enough to not feel hard dripped off by it, I would like to push the open XR tools render scale to nearer 200, I can currently get it to 130 with DLSS anything more and it becomes too glitchy.
Or should I bite the bullet and go for a 4090, there is quite a steep increase in price between the two.
Well DLSS 3 is what would make the big difference - it will at least double your frames. Obviously you will get that on even a 4070ti. Value for money? None of them are. They are all massively overpriced. I went for a 4070ti - paid the base price 799, but still feel a bit sick - but when I saw my frames go over 100 it made the price a bit more palatable. Ultimately it will depend more on your CPU as that is more of the deciding factor than the GPU.
Edit. Obviously the extra vram of the higher cards will help if you are using 4k
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I recently upgraded from a 3080Ti to an RTX4080 with exactly the same price differentials you mention (I’m in the UK). I have a G2 and my CPU is an aging but still surprisingly effective i9-9900K (@4.8GHz). I think the 4080 was a worthwhile upgrade. I use DLSS at ‘quality’ and I’m currently running at 4232 x 4140 per eye courtesy of the override in OXRTK, that is equivalent to roughly 180% in Open XR tools render scale.
Motion reprojection is locked at 30 FPS and things look pretty impressive from the pilot’s seat IMHO.
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Is it smooth though, I can get mine running pretty smooth with the 3080ti but its a bit blurry, if I want a sharp image and the small text to be readable then it struggles in densely populated areas and 3rd party airports.
I have a G2 and used to have a 3080 10G, which could only do 120 OXR before things got choppy. I now have a 4080 and do 160 OXR with good clarity and performance.
The 4080 can go to 180 OXR and still perform reasonably well, but I have found that once you go above 150 OXR there are diminishing returns in image quality, which is why I settled on 160 OXR for slightly better performance and get roughly 40 FPS average. I also sometimes switch to DLSS balanced if I am flying low and fast and that gets me 50+FPS for great smoothness at the cost of decreased image quality.
If you really want 200 OXR and great FPS without having to compromise down from DLSS quality then you are going to need a 4090.
Also DLSS 3 frame generation does not work in VR, so ignore that feature for VR only flying.
Yes it is smooth. So much so that I’m not in any great rush to upgrade my MB, CPU and memory at this point. In the future I will likely move over to a AMD Ryzen 9 7800X3D.
This thread is in Virtual Reality (VR) - Microsoft Flight Simulator Forums, so no DLSS3 
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I have never used VR so didn’t know that was what he was what he was using. Obv he mentioned XR Tools but that meant nothing to me until I just looked it up:-) VR is weird. I remember when it first started and TotalBiscuit used to rave about it being the next big thing. I just never got it - there’s a niche of people who rave about it but it never seems to have hit the mainstream. I think a combination of clunkiness, expense and motion sickness concerns puts a lot of people off. Who wants to spend lots of money on a new fangled piece of tech and then have to spend an extra 5 quid on a bucket to throw up in
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This is the way
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I thought so too (except for Half-Life Alyx) but MSFS VR has been a complete game changer for me. It’s not an FPS game with close fast motion so you don’t get sick, you just simply feel as if you are in a real cockpit flying in the real world.
I’m mainly a VFR flyer and after my first VR landing in MSFS where I could pan my head to see the runway while on base and smoothly align things in my turn to final, followed by a buttery landing because I could judge my descent rate much better, well, I just cannot go back to 2D whatsoever.
For reference, I am using a Reverb G2 with 4080.
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Are you GPU or CPU limited. I have a last-gen card which is still very good (like yours). When I check it’s my CPU that’s the bottleneck. The easiest method to find out is using OpenXR Toolkit. Set its fps counter to advanced and it will show you.
A CPU upgrade might be all you need, but of course that means a new motherboard and ram as well so I don’t think you’ll get off cheap in any case. Probably to achieve the settings you mention you’re going to need to upgrade everything. I’m in the same situation and I’m not looking forward to going down that rabbit hole. For now I’m happy with what I’m getting so I’m sitting tight… but I’m certainly itching to take the plunge. 
OXRTK used to be able to tell whether you were CPU or GPU bound but in the last version it was erroneously always saying you were CPU bound and the latest version doesn’t tell you main thread time at all, so it looks like it has been removed. eg.
The best way to tell whether CPU or GPU bound in VR with DX11 is through Developer Mode FPS view. eg.
With DX12, this doesn’t always work as GPU thread time can show 0 ms when it obviously isn’t. In that case, the best indirect way to tell whether you are CPU or GPU bound is to run something like GPU-Z and monitor GPU usage. If GPU usage is around 97-100% then you are GPU bound otherwise the lower the GPU usage percentage, the greater you are CPU bound. eg. here’s mine solidly GPU bound.
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I’m planning to pick up a 4070ti from microcenter even though I don’t like the price. My biggest concern is the VRAM. Sometimes I give over 12gb VRAM on my RX6800.