The only critical issue I have with VR at the moment is the apparent scale of everything. I know the C172 is small, but it appears to be about 50% smaller than reality. For example, the door on the passenger side seems to be 1 foot away instead of 3 feet - like my arm would go right through the window from the pilot seat if I extended it. It makes it seem like I'm flying a toy model of the 172 instead of the actual thing. 

Does anyone else have this issue? I think (not sure) this is due to the fact that I have a smaller than average IPD (the distance between your eyes). Is there a way to compensate for this? Like a world scale or IPD config setting somewhere? Maybe an adjustment in the Oculus control panel? I'm using the Quest 2.

BTW - Even with this quirk, VR is mind-blowingly awesome. 

Thanks!

Did you try the OpenXR toolkit?

https://mbucchia.github.io/OpenXR-Toolkit/

It has a corresponding setting. It's indeed related to the IPD.

Kind regards, Michael

I've given up a bit on VR recently, but if you use SteamVR you can adjust world scale in there per app and it worked great for me in FS2020

4 hours ago, pmb said:

Did you try the OpenXR toolkit?

https://mbucchia.github.io/OpenXR-Toolkit/

It has a corresponding setting. It's indeed related to the IPD.

Kind regards, Michael

That looks like it might do the trick - any downside that you know of (e.g. FPS, etc...)?

Will give it a shot and report back in case others have the same issue.

Thanks for the tip!

1 hour ago, enright said:

That looks like it might do the trick - any downside that you know of (e.g. FPS, etc...)?

I didn't change the World Size myself. I tried a few values and settled with the default. Maybe, because I adapted my IPD in the Windows WMR Control Panel Settings already.

I found the cockpit may look a bit distorted, if you deviate too far, though.

Aside World Size, the toool has quite a number of performance / visual quality optimisations which I use. They're in the documentation and here

https://forums.flightsimulator.com/t/openxr-toolkit-upscaling-world-scale-hand-tracking-release-thread/493924/1812

Kind regards, Michael

4 hours ago, pmb said:

I didn't change the World Size myself. I tried a few values and settled with the default. Maybe, because I adapted my IPD in the Windows WMR Control Panel Settings already.

I found the cockpit may look a bit distorted, if you deviate too far, though.

Aside World Size, the toool has quite a number of performance / visual quality optimisations which I use. They're in the documentation and here

https://forums.flightsimulator.com/t/openxr-toolkit-upscaling-world-scale-hand-tracking-release-thread/493924/1812

FYI - this did the trick.

In my case, the setting that seems most "normal" is much much smaller than my actual IPD. I wonder why that is. 

Adjusting the scale is an interesting exercise - an interactive lesson in perceived distance. Objects take up the exact same field of view, with the exact same geometry and apparent zoom level, they just "feel" larger or smaller due to the parallax difference in image for each eye. I found my brain started to question what "normal" actually looks like. 

Yet another knob to fiddle with in the pursuit of total immersion.

Thanks again for the tip!

Changing world scale shouldn't have any effect on FPS, I noticed that FOV does however (for the good if lowering)

Hey all. Sorry to drag up an old topic but I feel like many of the folks here at AVSIM probably fly both XP and MSFS.

Does anyone else feel like the world itself in XP is much bigger than in MSFS? I've adjusted the World Scale in MSFS in both the sim setting and in OXRTK and they have their effect, i.e. the cockpit can seem bigger or smaller (indeed in the extremes of the OXRTK settings, even a 172 can feel huge!) but the world outside never seems to change scale and in XP, it just feels bigger.

Maybe it's placebo, maybe not, but flying a little 172 at a large international airport in XP really feels like you're in a tiny two seater on a huge apron. I don't get the same feeling in MSFS.

Anyone else share this feeling, or am I alone in this tiny MSFS world? :)

There might be several things at play to impact your impression of distances/scale. However, I would recommend you to avoid using the "World Scale" option in MSFS as it's just a percentage and you have no precise way to understand which value is correct. You would have to adjust again and again until it "feels" right to you, which is not ideal.

From my side, I don't want values that "feel" right. I want values that "are" right. I want the scale to be 1:1. And from my understanding, in order to get a correct scale, you need to have the right and left ingame camera set to the same distance as your physical IPD. OXRTK lets you do that, since the setting in there actually shows as millimeters. I have modified the value to match my IPD (in addition to the physical adjustment in the headset itself) and now the world scale looks good to me, both in the cockpit and outside.

Regarding the difference of perceived world scale between MSFS and XPlane, beside the IPD concept I mentioned above, I would guess the autogen objects, especially the trees (trees height in particular) are probably playing a major role here.

I remember, back in the FS9/FSX days, when a freeware addon appeared to replace the tree textures by two or three smaller trees. At that time, I was still flying in 2D, VR wasn't available yet. But I remember clearly how this addon drastically changed my perception of distances and general scale in the sim. Trees are most likely a kind of reference point that we use to understand scale and distances. The different appearance and sizes of the trees in MSFS and XPlane are, I believe, one of the main reasons for the scale difference you perceive.

Thanks for your reply. Yeah, I guess it could be the trees. I remember the fuss around tree height early on after MSFS release!

I just circled around KSEA at around 800ft. in XP and it felt like I couldn't see as far into the distance as the same altitude in MSFS - almost like the earth was "wider" in XP. Difficult to explain.

Anyway - not sure there's much I can do about it! Maybe I'll look out for a tree mod and see if that works 🙂

Cheers. Happy flying!

On 4/17/2024 at 1:12 PM, wheeliemonster said:

Hey all. Sorry to drag up an old topic but I feel like many of the folks here at AVSIM probably fly both XP and MSFS.

Does anyone else feel like the world itself in XP is much bigger than in MSFS? I've adjusted the World Scale in MSFS in both the sim setting and in OXRTK and they have their effect, i.e. the cockpit can seem bigger or smaller (indeed in the extremes of the OXRTK settings, even a 172 can feel huge!) but the world outside never seems to change scale and in XP, it just feels bigger.

Maybe it's placebo, maybe not, but flying a little 172 at a large international airport in XP really feels like you're in a tiny two seater on a huge apron. I don't get the same feeling in MSFS.

Anyone else share this feeling, or am I alone in this tiny MSFS world? 🙂

No, you're not alone. I have been asking myself the same question for quite a while now. 

In VR, the world does look wider, the distances farther away, I was reminded of this last time i was taxying in the default MD80 in LIRF. or when taxiing in LGAV too. Despite the dreadful non-functional anti-aliasing in XP12 VR the mountains or objects at the horizon seem to be farther away. In my perception, the mountains look sharper against the blue sky or white clouds at the horizon. I think XP12 uses more polygons for their mountains but perhaps more importantly it could be the new lighting engine that sheds more nuanced levels of intensity at the ground seen from the observer all the way towards the horizon. MSFS's colors being too saturated. especially at noon on a sunny day, the XP trees being thinner and more sparse could indeed also be a factor at play here as Daube mentioned already. But in general. when taxiing on a(ny) default airport in XP12 VR I get this sense of an airport being a big place. Perhaps the fact that there are  more little objects present compared to a default MSFS airport also helps or that object in XP12 are rendered in a different way. MSFS always feels more like a 'painting' to me rather than a 3D world that has no light of its own but can only be seen because it reflects light to the observer like in XP12 ?

But for all I know, perhaps the designers of MSFS have taken a smaller radius for Earth's globe? LOL

 

Edited April 18, 20242 yr by avhpilot