VR experiences IL-2 Korea

[Spitfire1964]

I'm at a loss as to how to get IL-2 Korea working in VR... I followed the advice from the forums about tweaking the BIOS, and now it's worse than before... my GPU is maxed out right from the start.

[Sparviero]

17 hours ago, AEthelraedUnraed said:

It's pretty easy to test. If the graphics engine is CPU-bottlenecked, you'd expect that:

1. The CPU load goes up in graphics-intensive scenes (especially those with lots of objects).
2. With a high CPU load, the FPS goes down.

When testing, it's important that you change only one thing; e.g. comparing normal flight with attacking a formation of 30 bombers doesn't work since you cannot (easily) differentiate between the CPU usage of the rendering pipeline and AI/physics. I've therefore done the following tests:

1. No dynamic objects except the player aircraft; looking down in external view; comparing Seoul with the empty countryside 20km onwards. Results:
   Performance over Seoul:
   CPU load 10-12% (min/max), framerate around 45 fps average.
   Performance over the countryside:
   CPU load 9-12% (min/max), framerate around 90 fps average.
2. Flying over the countryside, looking up from within the cockpit (to minimise the amount of rendering). After 30s, 48 MiGs, Sabres and B-29s are spawned on the other side of the map, outside of rendering distance (but physics/AI calculations are still done). Results:
   Performance before other aircraft spawn:
   CPU load around 10%, framerate 107-124 fps (min/max).
   Performance after other aircraft spawn:
   CPU load around 170% (and heavy time dilation), framerate 103-117 fps (min/max).
3. A combination of the above experiments. Circling over Seoul, looking down, after 30s other aircraft spawn to overload the CPU. I've waited 1 full circle to sample at approximately the same point over the city.
   Performance before other aircraft spawn:
   CPU load around 7-11%, framerate 52-56 fps (min/max).
   Performance after other aircraft spawn:
   CPU load 170-180% (and heavy time dilation), framerate 49-52 fps (min/max).

In the first experiment, there was a very minor increase in CPU load in graphically intensive scenes, of which I doubt it's statistically significant (cf. experiment 3). The CPU load stays quite low even above Seoul, although the framerate halves. In the second experiment, the framerate drops by about 5% after the CPU is overloaded. The third experiment corroborates the results, showing a small framerate drop of around 6.5%.

Note that a part of the rendering pipeline happens on the CPU, so a small drop in framerate is to be expected if the CPU is overloaded (which is indeed what we see). These experiments do not point however to the CPU being a particular bottleneck on the graphics, nor to the CPU having a major influence on the frame rate.

Overall, IL2 is certainly CPU limited as you see major time dilation in large battles. The CPU specifically limiting graphics however, is not something consistent with these experimental results.

Great analysis but... was not GB engine replaced with a new one to solve the CPU limit of GB? Great result...

[AEthelraedUnraed]

29 minutes ago, Sparviero said:

Great analysis but... was not GB engine replaced with a new one to solve the CPU limit of GB? Great result...

Kind of; the engine wasn't replaced but several of its components got significantly upgraded. One of the things that got changed was a simplified AI to make the game less CPU intensive, but that's not what being discussed here. I specifically investigated the CPU's influence on the graphics pipeline. The overall CPU usage is a different matter, although my results show that time dilation is still a thing.

Anyhow, I tested Korea's engine. The results of similar tests on GB's engine might differ; I don't know.

1 hour ago, Spitfire1964 said:

I'm at a loss as to how to get IL-2 Korea working in VR... I followed the advice from the forums about tweaking the BIOS, and now it's worse than before... my GPU is maxed out right from the start.

The top right of your screen gives a major clue: "Not enough video memory". The Task Manager corroborates that. Lower your graphics settings until your VRAM has got some breathing space, and you should be fine.

[Husar]

1 hour ago, Sparviero said:

Great analysis but... was not GB engine replaced with a new one to solve the CPU limit of GB? Great result...

They figured out how to make it run (huge AI bombers formation)smoothly in multiplayer. The whole AI bomber formation is simulated on the dedicated server, so gameplay stays smooth. But if you run the same mission in single-player, your CPU starts getting hammered because it has to simulate everything locally.

[MoleUK]

2 hours ago, Spitfire1964 said:

I'm at a loss as to how to get IL-2 Korea working in VR... I followed the advice from the forums about tweaking the BIOS, and now it's worse than before... my GPU is maxed out right from the start.

Ignore the main menu performance. It's tripping people up in the way it looks/performs. 

You will need to hop into jets in both SP and MP to get accurate performance reads. 

[YoYo]

7 hours ago, Mephisto said:

**OpenXR Toolkit**
Unfortunately I needed to fully disable it as the game would crash very quickly with it. After disabling no single crash. Current pita is that there is no adjustment for world scale and the cockpits look very small...

Generally, OpenXR Toolkit works for me, but only once per flight. I can fly for up to two hours and it's fine. All I have to do is end the flight, change something (e.g., weaponry), and the next flight is a CTD after 5 minutes. However, I have to use Toolkit because IPD +/- doesn't work in OpenXR & Korea, and the cockpit itself is too small. Toolkit solves this temporarily (113% for is ok). I hope they fix it in a quick patch, not on August 4th.

[Dash,Polder]

7 hours ago, Mephisto said:

Unfortunately I needed to fully disable it as the game would crash very quickly with it. After disabling no single crash. Current pita is that there is no adjustment for world scale and the cockpits look very small...

Not exactly true anymore, it can be done with VectorXR just fine.  It's brand new, up to date and actively being worked on, built by a flight sim fan, and it's free.

[huligan]

35 минут назад, YoYo сказал:

IPD +/- doesn't work in OpenXR & Korea

Yes! it very unpleasant:(((

[=ILS=_Abu_27]

22 minutes ago, Dash,Polder said:

现在不完全正确了，用VectorXR完全可以做到。它是全新的、最新的、正在开发中的，由一位飞行模拟爱好者制作，而且是免费的。

could u give a link  thanx!!!

[Dash,Polder]

25 minutes ago, =ILS=_Abu_27 said:

could u give a link  thanx!!!

Spoiler

https://diener.tech/products/vectorxr

 

[Crow]

Quest 3, 4090 14900K, 64 GB RAM, OpenXR without toolkit, using Virtual Desktop with 6E router for max bitrate

Framerate is solid, rarely dipping below 72 fps in any of the included missions. My issue is the aircraft cockpits look beautiful and as expected, but the terrain and all other parts of the scene are low res, aliased, smeared, jittery, etc. I've tried every combination of settings I can except OpenVR, which I'm going to try next.

Has anyone found a good combination of settings/software to bring the terrain and vehicles up to matching quality with the cockpit with a Quest 3?

Edited July 1 by Crow

[Crow]

10 hours ago, Dash,Polder said:

  Hide contents

https://diener.tech/products/vectorxr

 

This is the most vibe-coded thing I've ever seen. The website and the application both. It's not going anywhere near my machine.

[YoYo]

37 minutes ago, Crow said:

Quest 3, 4090 14900K, 64 GB RAM, OpenXR without toolkit, using Virtual Desktop with 6E router for max bitrate

Framerate is solid, rarely dipping below 72 fps in any of the included missions. My issue is the aircraft cockpits look beautiful and as expected, but the terrain and all other parts of the scene are low res, aliased, smeared, jittery, etc. I've tried every combination of settings I can except OpenVR, which I'm going to try next.

Has anyone found a good combination of settings/software to bring the terrain and vehicles up to matching quality with the cockpit with a Quest 3?

I have Quest (but RTX 5090). You can try it (plus FOV 0,75 and 0,75 in Debug tool).

Edited July 1 by YoYo

[TCW_Brzi_Joe]

2 hours ago, Crow said:

This is the most vibe-coded thing I've ever seen. The website and the application both. It's not going anywhere near my machine.

I tried that VectorXR and I like it. It has potential to be number one openxr helper program. For now their quad views do not work well with my pimax (or I do something wrong), but the rest is working.

PS: you can read more in thread about VectorXR in DCS forum

Edited July 1 by TCW_Brzi_Joe

[Husar]

2 hours ago, Crow said:

Quest 3, 4090 14900K, 64 GB RAM, OpenXR without toolkit, using Virtual Desktop with 6E router for max bitrate

Framerate is solid, rarely dipping below 72 fps in any of the included missions. My issue is the aircraft cockpits look beautiful and as expected, but the terrain and all other parts of the scene are low res, aliased, smeared, jittery, etc. I've tried every combination of settings I can except OpenVR, which I'm going to try next.

Has anyone found a good combination of settings/software to bring the terrain and vehicles up to matching quality with the cockpit with a Quest 3?

DLSS quality preset M, but I don't like flying with DLSS in multiplayer because antyaliasing make judge contact type and aspect difficult without zoom. I would like to fly on MSAA X2 without frame drops below 72 over the cites or buise airfields. The texture streaming is bugged or to aggressive in LoD switching making textures look blurry .

[Charger]

How is spotting and aircraft IDing? Better than BOS?

Can you spot planes from above against the ground?

[YoYo]

13 minutes ago, Charger said:

How is spotting and aircraft IDing? Better than BOS?

Can you spot planes from above against the ground?

Harder to spot, due more elemwnts on the ground.

[Husar]

2 hours ago, Charger said:

How is spotting and aircraft IDing? Better than BOS?

Can you spot planes from above against the ground?

I think easier, do to tone palette difference vs GB also better against sky or clouds. OLED with HDR monitor users perspective.

Edited July 1 by Husar

[Gunfreak]

3 hours ago, Charger said:

How is spotting and aircraft IDing? Better than BOS?

Can you spot planes from above against the ground?

MIG15 vs F-86 Sabre are probably the hardest aircraft in aviation history to tell apart. If both sides are in aluminum. You have to get close enough to see the tail. 

It seems in multiplayer the Red side often get camo paint on their migs

 Meaning if you're in a red aircraft and see a shiny metal jet. You can shoot them down.

[Patricks]

3 hours ago, Charger said:

How is spotting and aircraft IDing? Better than BOS?

Can you spot planes from above against the ground?

I think it's quite similar to BoX, at least on my settings it is.  How is everyone doing with aiming rockets? I get quite close, steady pipper (have tried both Fixed and gyro), and they seem to go left, right, everywhere i'm not aiming?

[YoYo]

52 minutes ago, Patricks said:

I think it's quite similar to BoX, at least on my settings it is.  How is everyone doing with aiming rockets? I get quite close, steady pipper (have tried both Fixed and gyro), and they seem to go left, right, everywhere i'm not aiming?

The key is a wind, you have to fly with or against the wind, it's much harder to aim than in BoX.

Also check this topic:

https://forum.il2-series.com/topic/3641-how-to-firing-rockets-with-the-k-14c-gyro-sight/#findComment-22946

[Gunfreak]

1 hour ago, Patricks said:

I think it's quite similar to BoX, at least on my settings it is.  How is everyone doing with aiming rockets? I get quite close, steady pipper (have tried both Fixed and gyro), and they seem to go left, right, everywhere i'm not aiming?

You need to be completely still. And yaw movement even a tiny bit will throw the rockets everywhere.

You need to go out long come in at stable dive, stable speed and perfect trim. I've gotten a few very nice rocket shots. But still missed the target by a few meters.

[Jade_Monkey]

I've had some success with the Pimax Dream Air SLAM by switching to SteamVR (!) and using the Sboys3 1.3 driver via Pimax EVO.

Performance is generally good in the air (90fps), with lower fps near the ground (35-55 fps) while also getting fairly good visuals with almost no aliasing.

I can finally play a little bit instead of being focused on the settings and tweaking them.

 

---------------------

Pimax Settings:

• 90 Hz
• Quality: Auto

Sboys3 Driver Settings: Default. Select the Dream Air Driver.

Steam Vr: 80% resolution per eye (3592x3036)

IL2 Korea:

[=ILS=_Abu_27]

22 hours ago, Dash,Polder said:

  揭示隐藏内容

https://diener.tech/products/vectorxr

 

i tryed it already , its really good , settle my problem about necksafer  . but if it has the world scale option ? i heard that korea need 113% scale. but any way really thank you every much and every much !

[Galraak]

I play this game too little, because of the optimization, but I wanted to know if we could change the capture mode? When I stream on Discord, to introduce my friends to the game, I have the sight of both eyes, but it's not pleasant to watch.