Jump to content
chiliwili69

Items to review if you have low performance in IL-2 VR test

Recommended Posts

If you have run one of this IL2 VR performace tests:

 

 

and you achieve a significanly lower fps than your rig peers, or lower fps than expected (column U), then you should review these checkpoints to try to solve it.
Please, feel free to post any issue you solved or any item that should be included.

 

HARDWARE:
1.- Verify that your single GPU is placed in the best PCIE slot (your Mobo manual should recommend the best slot)
2.- If you use 2x4Gb, 2x8Gb, or 2x16Gb RAM, verify that your two RAM modules are placed in the right slots to use dual channel (tipically slot 1&3 or 2&4, they have same color)
3.- If you have 16Gb RAM, verify that you have 2x8Gb or 4x4Gb RAM modules to benefit from Dual Channel. Same applies for 8 (2x4), 32Gb (2x16, 4x8) etc. Always a pair of RAM sticks.
4.- Run the full Passmark (https://www.passmark.com/products/pt.htm) and UserbenchMark (http://cpu.userbenchmark.com/ ) and compare your percentiles for CPU, RAM, GPU
Verify specially your Passmark CPU Single-Threaded number you achieve.
5.- If your RAM has a slow clock speed your performance will be lower. It should be desirabe to be at or above 2400MHz. (Try to enable your XMP profile in BIOS)
6.- If your CPU is a Ryzen, they are not good for IL-2 VR. They have low performance for single-thread.
7.- If your CPU is i5-4690K, they don´t perform particularly well in IL-2 VR. Based on their PassMark SingleThread, they are below VR expected performance. We don´t know why.
8.- Go into Device Manager and look in the Oculus VR Devices, under it you will see your sensors listed. Set each one to keep from shutting off, by right clicking- click properties-click power management tab. Uncheck "allow the computer to turn off this device to save power", then click apply
9.- Verify in the Windows Task Manager that no other apps or heavy processes are running in the background

 

VR SETTINGs:
1.- Double check that your are using the same settings specified in the VR test and don´t forget to press H to hide the hud.
2.- Verify you only use SuperSampling in one place (for VR test either SteamVR with 1.5 or OculusTrayTool/OculusDebugTool with 1.2)
3.- Verify that you set ASW OFF when running the VR test. See your in-game fps counter pressing Backspace and verify it has values diferent from 45 or 90. Or verify that properller artifacts disappear.
4.- For VR test, be sure to not use any Mod or Reshade code since they affects performance.
5.- Put SS=1 and run the VR test again. If your fps increased considerably, then the fault is in the GPU.
6.- Try to run the test with the monitor. If you have a good fps then the problem is with the Rift/Vive.
7.- Remember to not use "Advanced Supersampling Filtering" settings in SteamVR
8.- Launch the "Oculus Mirror" tool (Located at C:\Program Files\Oculus\Support\oculus-diagnostics) which displays what you actually see in the Rift. You have a number of options (described at https://developer.oculus.com/documentation/pcsdk/latest/concepts/dg-compositor-mirror/ ) but the useful info will tell you the actual horizontal and vertical pixels of the render. Tip: To display this info you have to enable the "Visible HUD: Layer" in the Oculus Debug Tool. This are the numbers that you should have: https://forum.il2sturmovik.com/topic/36160-supersampling-ratios-rift-vs-vivepro-vs-odyssey/

 

GPU SETTINGS:
1.- Update your GPU driver.
2.- In the NVIDIA control panel, set power management for "Maximum performance" for IL-2 application
3.- Monitorize CPU/GPU clock, RAM/VRAM usage, CPU/GPU temps with MSI Afterburner using trendlines and check that they are where they have to be.(not downclocking CPU/GPU)
4.- Be sure your Rift is connected to the GPU HDMI and not the HDMI of the Mobo (Who knows!)
5.- If your GPU is GTX-970 or GTX-1050/1060, they are the limiting factor in the VR test. You will need to decrease SS or use lower graphics settings to play IL-2 VR with good fps.

 

BIOS SETTINGS:
1.- Update your BIOS firmware and Chipset from your Mobo manufacturer.
2.- Remove CPU power limits or CPU amperage limits to avoid CPU throttling.
3.- Try to put AVX offset to 0. Since IL-2 uses AVX instructions this could downclock your CPU a bit.
4.- It depends very much of every Mobo, but just for reference this is my BIOS settings: https://docs.google.com/spreadsheets/d/1zrEWtXGD4d1KMG3v9bGLeyITKJOAzA2Q91ghgCs0NxY

 

Edited by chiliwili69
  • Upvote 2

Share this post


Link to post
Share on other sites

This man cannot be thanked enough for his summaries. Top notch.

 

Absolutely, him, dburne and a couple of others have stopped me selling the bloody thing and starting to really enjoy it.

Share this post


Link to post
Share on other sites
On 2/10/2018 at 5:09 AM, chiliwili69 said:
[...]
2.- Remove CPU power limits or CPU amperage limits to avoid CPU throttling.
[...]

 

I just want to point out that this setting has many different names.  My problem (i5-4670k; GTX 770) came from my MSI motherboard.  A setting called “CPU Phase Control” was the culprit.  It would reduce the power to my cpu when it saw the load lighten from a less intense scene in-game.  This would also cause my gfx cards to reduce output (I don’t know why).  This caused my fps to drop in half or worse.  Then the inverse would happen as the PC sensed the increased demand for power.  

 

Turned off my “CPU Phase Control” and the problem was fixed.  No amount of other settings would cancel out that setting in the BIOS.

 

This seems to be a MSI issue so far as I can tell.

 

sorry for the necro.

Share this post


Link to post
Share on other sites

Don't forget to plug the 1080 Ti into the highest PCI-e slot, some machines have both x4 and x16 slots.

Share this post


Link to post
Share on other sites

looking at the spread sheet i see the FPS is min 40 max 90 which is what i get on my 3.6 to 4.9  I7 9700 K CPU 1080 TI GPU ,  32 GIG RAMS , HTC VIVE VR  i dont see any of the datas showing a constant average of  90 and not less in any given situation . Having said that is anyone getting a minimum of 90 FPS in any situation such as various objects and tracer moving in front including clouds  ? 

Edited by dog1

Share this post


Link to post
Share on other sites
57 minutes ago, dog1 said:

looking at the spread sheet i see the FPS is min 40 max 90 which is what i get on my 3.6 to 4.9  I7 9700 K CPU 1080 TI GPU ,  32 GIG RAMS , HTC VIVE VR  i dont see any of the datas showing a constant average of  90 and not less in any given situation . Having said that is anyone getting a minimum of 90 FPS in any situation such as various objects and tracer moving in front including clouds  ? 

 

No current VR headset / PC setup can give a constant max FPS in Il-2. 

IL-2 does a better job of getting closer from what I have seen.

Edited by dburne

Share this post


Link to post
Share on other sites

so how  is everyone getting 90 FPS with various objects tracer and clouds in front  ? I have n't found any tweak that  made any difference PC or Steam set ups . In non VR i am getting  around 120 facing hangars or 150 in solo flight , in VR Ultra settings  i get 88 in solo flight , very clear message windows . I dont see any difference between Ultra and high settings so i'm keeping Ultra for now .  I cannot join servers with the intention of dog fighting until i find that missing link which can double my FPS  when in action .

Edited by dog1

Share this post


Link to post
Share on other sites
21 minutes ago, dog1 said:

so how  is everyone getting 90 FPS with various objects tracer and clouds in front  ? I have n't found any tweak that  made any difference PC or Steam set ups . In non VR i am getting  around 120 facing hangars or 150 in solo flight , in VR Ultra settings  i get 88 in solo flight , very clear message windows . I dont see any difference between Ultra and high settings so i'm keeping Ultra for now .  I cannot join servers with the intention of dog fighting until i find that missing link which can double my FPS  when in action .

 

As I mentioned, currently no one is. 

Share this post


Link to post
Share on other sites

so thats the end of my quest , no point beating a dead horse .  The issues  are multiple as we stand today , the game engine , the VR sets capacity , CPU and GPU ?  we dont really know . I received my first ever head tracking kit  called Track hat  and also installed the free  Opentrack to  compare , i spent over 2 full days maybe more than 16 hrs trying to make them work or resolve issues and the result was not one works correctly  , extremely buggy and will corrupt very easily any saves or files . Even saving  mapping set up files will corrupt next time you want  to play  even though the mapping still shows all is set correctly in the INI file . So i am now inclined to seriously consider ordering my first TRACK IR ,  a name i know since maybe  20 years  but never took the plunge . That will keep my FPS where it should well above 120 in action . Thank you for the frank replies and assistance .      

Share this post


Link to post
Share on other sites
5 minutes ago, dog1 said:

 The issues  are multiple as we stand today , the game engine , the VR sets capacity , CPU and GPU ?  we dont really know . I received my first ever head tracking kit  called Track hat  and also installed the free  Opentrack to  compare , i spent over 2 full days maybe more than 16 hrs trying to make them work or resolve issues and the result was not one works correctly  , extremely buggy and will corrupt very easily any saves or files . Even saving  mapping set up files will corrupt next time you want  to play  even though the mapping still shows all is set correctly in the INI file . 

 

Sorry dog1 but I don't understand this.  Track hat and Opentrack are to do with head tracking - which is what TrackIr is.  None of them have anything to do with VR.

 

Your system should run a Vive in IL2 BoS with no problems.  By no problems I mean the image you will enjoy should be clear and smooth.  Yes, there will be screen door effect and resolution will mean distant objects will be blurred.  You will not be able to run at a consistent 90fps - but as you have been told, no one else can....yet.

 

However, the game itself should run smoothly.  Have you gone through some basic settings like making sure the game is running in Windowed mode with Vsyn off and the game resolution is reduced to something like 1024 x 768.

Perhaps you have already but it might pay to lower all your graphics settings and see how it runs?

 

Perhaps even,  the best thing to do might simply be to turn off the fps counter and try and concentrate on a smoothly running, stutter free game? 

Share this post


Link to post
Share on other sites
2 hours ago, dog1 said:

so how  is everyone getting 90 FPS with various objects tracer and clouds in front  ? I have n't found any tweak that  made any difference PC or Steam set ups . In non VR i am getting  around 120 facing hangars or 150 in solo flight , in VR Ultra settings  i get 88 in solo flight , very clear message windows . I dont see any difference between Ultra and high settings so i'm keeping Ultra for now .  I cannot join servers with the intention of dog fighting until i find that missing link which can double my FPS  when in action .

 

You're not being logical. You really need to think about what you're saying and trying to do:

  • "Everyone else" gets 90 FPS. I think you're exaggerating, but let's assume that's true.
  • You're getting 88 FPS in solo flight with VR Ultra settings.
  • You don't see any difference between High and Ultra, so you kept Ultra settings
  • On dogfight servers you don't get enough framerate, and you are complaining.

The folks on this forum are perfectly happy to provide assistance, but you need to think for yourself too. Here are some things to check:

  • How fast is your CPU boosting during IL2 gameplay? If you are using a 9700K with default settings, it might not be hitting 4.9ghz. Find an overclocking guide and set up your CPU to hit 4.9ghz all core boost. If you don't know what I mean by "all core boost" feel free to Google it.
  • What happens if you drop the in-game settings to Low or Balanced? Any improvement? What about if you mess with other settings such as landscape distance, shadows, mirrors, SSAO, HDR, antialiasing?
  • What happens if you follow Fenris' "guide for best spotting" stickied in this forum?

Again, people here want to help, but I personally am on the edge of skipping all of your threads because you are ignoring advice and making illogical decisions. I know there's a language barrier here and I don't mean to be rude, but I think you need to slow down and really think about what you're doing with your settings.

  • Upvote 1

Share this post


Link to post
Share on other sites

Agreed.

dog1, if you want to continue to pursue this, I would suggest keeping to your original thread posting for help.

That way it is all in one location and folks that are trying to help can see what all has been suggested and tried.

Here you have revived a thread that is well over a year old.

 

You have a beefy rig, and while you may be expecting a little much of current VR technology,  the experience can be quite

exhilarating once it is dialed in. As most of VR enthusiast in here can attest to. Granted a few have tried and just did not like it.

 

Really, having a Vive today is first generation product when there are better devices now with better resolution and still runs decent.

I am more than thrilled with what I see in my Rift S, and it certainly is not the best out there in resolution. Reverb seems to be the device of choice today

for just flight or racing sims.

 

But yes if you were to decide VR is just not for you, then for monitor playing Track IR 5 is hard to beat.

I will tell you I got my first Rift back in Jan 2017, and have not gamed on the monitor since.  And I use it daily.

 

 

 

 

Edited by dburne

Share this post


Link to post
Share on other sites

On the original topic, has Number 6 changed with the Zen2 chips? Been trying to track down a good apples to apples comparison with the I9 and Zen2 chips for VR, but still haven't located one. 

Share this post


Link to post
Share on other sites

Yes would be interesting to see and I wonder what under the hood changes we will see with Il2 in the up coming release??? (multi core support, cough)

 

As for Ryzen, I'm got incoming a 3900X setup which will be paired with a RTX 2080.  Should be a nice improvement on my current system.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×
×
  • Create New...