fixed Huge SP performance degradation with 2.9.7.58923 and 2.9.6.58056 compared to DCS 2.9.5.55918

[lefuneste01]

17 hours ago, wheelie said:

I also tested it using SteamVR/OpenVR as opposed to Varjo openxr with the InstanceExtensionsWrapper.dll.
After seeing an improvement using SteamVR i set it back to using Varjo's OpenXR with OpenXR toolkit enabled.

Hello, how did you make OpenVR working with the MT ? 
Do you use Quad view with Aero (because it is not compliant with OpenXR toolkit on my PC) ?

 

[anlq]

On 8/19/2024 at 5:17 AM, shastasm said:

Reverting back to 2.9.5....

Use this link if you need to do the same: 

 

 

I believe using Skatezilla updater utility is easier

[wheelie]

27 minutes ago, lefuneste01 said:

Hello, how did you make OpenVR working with the MT ? 
Do you use Quad view with Aero (because it is not compliant with OpenXR toolkit on my PC) ?

 

The Varjo Base software has the option to enable OpenVR and disable OpenXR.
I enable OpenVR
Disable the OpenXR toolkit
Start SteamVR and set Steam VR to be the runtime

This allows me to run in SteamVR with 50% motion compensation and is excellent if you intend to record or stream DCS.
I also lock it to 60fps.

In the Varjo OpenXR config json file i change it from quad view InstanceExtensionsWrapper.dll to VarjoOpenXR.dll

I then start DCS with the following shortcut:

"S:\Eagle Dynamics\DCS World OpenBeta\bin-mt\DCS.exe" --force_enable_VR --force_OpenVR
 

 

Edited August 20, 2024 by wheelie

[Rene Coulon]

10 hours ago, StreetBikeSammy said:

Having similar issues ever since the Chinook update. ED really needs to figure out how to utilize and clear VRAM usage. There's no reason dcs needs 12+ GBs of vram and have to ALT tab every 10 minutes/ using f10 map and have windows clear space so it can run a different program.

Maybe put down all these <profanity> unfinished new modules in beta and work on the MT preview and some optimization for once...

 

I cannot agree more, a tiny fraction of us might be looking forward to the Tornado as an example, bur THOUSANDS of us are exasperated, and pi##$d off by the what feels like a collapsing CORE of the Sim. Does not help putting lipstick on a pig of core...its still remains a pig. 7 days of testing now...and no closer to a definitive answer, except to say my Rigs ability to run missions has TANKED....AGAIN for the 2nd time in around 6 months, both after "Updates"

2 hours ago, anlq said:

I believe using Skatezilla updater utility is easier

Absolutely NUTS that we need to even consider this...but for now it looks like the only sane thing to do, Thanx for sharing

[Rene Coulon]

I have loaded QUICK CPU, not 100 % convinced much changed, but at the very least I can see that no cores are parked etc etc.

This is going to help with testing I hope.

[av8orDave]

Just an opinion, but one that has been formed by 15 years of messing around with DCS, along the way using multiple computer systems, upgraded components, and endless tweaking of setups for multiple VR headsets:

You can "tweak" and "adjust settings" until you are blue in the face. You can waste hours, days, weeks, months seeking smooth, high-FPS performance. The bottom line is that with some updates, they break the performance of the game, and you're beholden to ED diagnosing the issue and pushing an update to get real results. 

Many of the tweaks you're seeing are 100% dependant on the specific system being used, software interactions, hardware interactions, and on and on. Many are even just the placebo effect. 

The current update took performance backward in a big way. The solution is reducing the number of units in a given mission to very few; exactly how many might depend a bit on your system. 

The point is that no amount of diagnostic tools, tweaking, etc, is going to make the current version work "smoothly". We're waiting for ED to make a fix. Yes, it's a frustrating reality, but it is what it is. 

[Rene Coulon]

12 minutes ago, davidrbarnette said:

Just an opinion, but one that has been formed by 15 years of messing around with DCS, along the way using multiple computer systems, upgraded components, and endless tweaking of setups for multiple VR headsets:

You can "tweak" and "adjust settings" until you are blue in the face. You can waste hours, days, weeks, months seeking smooth, high-FPS performance. The bottom line is that with some updates, they break the performance of the game, and you're beholden to ED diagnosing the issue and pushing an update to get real results. 

Many of the tweaks you're seeing are 100% dependant on the specific system being used, software interactions, hardware interactions, and on and on. Many are even just the placebo effect. 

The current update took performance backward in a big way. The solution is reducing the number of units in a given mission to very few; exactly how many might depend a bit on your system. 

The point is that no amount of diagnostic tools, tweaking, etc, is going to make the current version work "smoothly". We're waiting for ED to make a fix. Yes, it's a frustrating reality, but it is what it is. 

Agreed David, Its just comforting, in a way to know many of us are having similar issues, and for sure...its in Eds hands

[Darcaem]

Exactly... I used to play DCS because it allowed me to create awesome scenarios. But if the one way I have to fly in DCS now is to start up a cold Hornet from airbase A and land on airbase B, in an empty map... quite frankly, I do prefer fly the super hornet in "that other sim". The flight model is worse, there is no comparison in systems modeled and capabilities, but since I cannot even use those system, at least I have better terrain graphics...

[Cleric812]

Hey all,

Maybe not related but I did notice something odd in the dcs log file. When I start the game it recognises all the cores on my 5800X3D and assigns them tasks, from memory they are core, render, and IO. However it assigns half the CPU to core, the other to render and none to IO. Is this correct? Does anybody else see the same behaviour? It is all the way in the beginning of the log.

 

Brgds,

Vincent

[Darcaem]

8 minutes ago, Cleric812 said:

Hey all,

Maybe not related but I did notice something odd in the dcs log file. When I start the game it recognises all the cores on my 5800X3D and assigns them tasks, from memory they are core, render, and IO. However it assigns half the CPU to core, the other to render and none to IO. Is this correct? Does anybody else see the same behaviour? It is all the way in the beginning of the log.

 

Brgds,

Vincent

I have the same core distribution in a i9700k, 0-3 render cores and 4-7 common cores, IO cores empty. But I assume this is in fact correct, in my case I do not have performance nor efficiency specific cores, so it assigns half to each task, all have the same performance so no matter which core are assign no what

Edited August 20, 2024 by Darcaem

[upupandaway]

4 hours ago, davidrbarnette said:

Just an opinion, [...] but it is what it is. 

Agree absolutely. Been like this for more than a decade. All you can reasonably do is wait, at least that's how I think about it nowadays.

[Glide]

I love this sim.  So, Low Latency Mode was not the cure, it just made it easier to see what's going on.  I completely uninstalled Quadviews, so that is not clouding the picture.  Then I finally set Low Latency Mode to Off and VR PreRendered Frames to Application Specific.  Since the sim was responding to driver level changes (low latency mode) I wanted all that out of the equation.  I turned off everything in the Crystal, no eye tracking, no smart smoothing, no dfr.  I had to reduce my resolution a bit, so I'm running 76% resolution in the Crystal with TAA and FSR at 84%. 

Eventually, I got it so I could cause the spikes on demand.  I got the ones is this shot by wiggling the mouse.  if I don't touch the mouse, it's a straight line.  If I wiggle the mouse, it spikes.  That big one on the end is a screenshot.

[Moezilla]

46 minutes ago, Glide said:

I love this sim.  So, Low Latency Mode was not the cure, it just made it easier to see what's going on.  I completely uninstalled Quadviews, so that is not clouding the picture.  Then I finally set Low Latency Mode to Off and VR PreRendered Frames to Application Specific.  Since the sim was responding to driver level changes (low latency mode) I wanted all that out of the equation.  I turned off everything in the Crystal, no eye tracking, no smart smoothing, no dfr.  I had to reduce my resolution a bit, so I'm running 76% resolution in the Crystal with TAA and FSR at 84%. 

Eventually, I got it so I could cause the spikes on demand.  I got the ones is this shot by wiggling the mouse.  if I don't touch the mouse, it's a straight line.  If I wiggle the mouse, it spikes.  That big one on the end is a screenshot.

The mouse polling issue has been here since 2.9.6, iirc. Anything over 500hz can cause the effect you are seeing. Check your mouse software for polling rate (not dpi) and drop it to 500hz or lower and see if it makes the mouse spikes go away.

[Loukuins]

5 minutes ago, Moezilla said:

The mouse polling issue has been here since 2.9.6, iirc. Anything over 500hz can cause the effect you are seeing. Check your mouse software for polling rate (not dpi) and drop it to 500hz or lower and see if it makes the mouse spikes go away.

I can confirm, using more than 500Hz cause issues with DCS

[Glide]

I turned off Tooltips, since the sim is polling the mouse for those.  Has anyone seen this in 2D?  You can literally bump the desk and watch it happen.

[Grindmetal]

Modular Server perfomance Horrible too Cores stucks 

 

2024-08-20 22:00:11.117 INFO    EDCORE (Main): system  affinity mask: 1111111111111111
2024-08-20 22:00:11.117 INFO    EDCORE (Main): process affinity mask: 1111111111111111
2024-08-20 22:00:11.118 INFO    EDCORE (Main): CPU: AMD Ryzen 7 5700X3D 8-Core Processor            [1x L3 caches]
2024-08-20 22:00:11.118 INFO    EDCORE (Main): CPU has uniform cache size 96 MB (per cache)
2024-08-20 22:00:11.118 INFO    EDCORE (Main): all CPU cores have the same efficiency class 0
2024-08-20 22:00:11.118 INFO    EDCORE (Main): CPU cores have different performance classes: [0-6]
2024-08-20 22:00:11.118 INFO    EDCORE (Main): logical cores with performance class 6: {0, 1}
2024-08-20 22:00:11.118 INFO    EDCORE (Main): logical cores with performance class 6: {2, 3}
2024-08-20 22:00:11.118 INFO    EDCORE (Main): logical cores with performance class 5: {4, 5}
2024-08-20 22:00:11.118 INFO    EDCORE (Main): logical cores with performance class 4: {6, 7}
2024-08-20 22:00:11.118 INFO    EDCORE (Main): logical cores with performance class 3: {8, 9}
2024-08-20 22:00:11.118 INFO    EDCORE (Main): logical cores with performance class 2: {10, 11}
2024-08-20 22:00:11.118 INFO    EDCORE (Main): logical cores with performance class 1: {12, 13}
2024-08-20 22:00:11.118 INFO    EDCORE (Main): logical cores with performance class 0: {14, 15}
2024-08-20 22:00:11.118 INFO    EDCORE (Main): common cores: {8, 9, 10, 11, 12, 13, 14, 15}
2024-08-20 22:00:11.118 INFO    EDCORE (Main): render cores: {0, 1, 2, 3, 4, 5, 6, 7}
2024-08-20 22:00:11.118 INFO    EDCORE (Main): IO cores: {}
2024-08-20 22:00:13.140 INFO    EDCORE (Main): pause10: 0.017547 us (std dev: 0.026010)
2024-08-20 22:00:13.140 INFO    EDCORE (Main): pause10: 485 cycles (std dev: 1074.8)
2024-08-20 22:00:13.141 INFO    EDCORE (Main): Created boot pool: n:16
2024-08-20 22:00:13.142 INFO    APP (Main): Command line: "I:\DCS World OpenBeta\bin-mt\DCS.exe" --restarted
2024-08-20 22:00:13.142 INFO    APP (Main): DCS/2.9.7.59263 (x86_64; MT; Windows NT 10.0.19045)
2024-08-20 22:00:13.142 INFO    APP (Main): Application revision: 239263
2024-08-20 22:00:13.142 INFO    APP (Main): Renderer revision: 25342
2024-08-20 22:00:13.142 INFO    APP (Main): Terrain revision: 25357
2024-08-20 22:00:13.142 INFO    APP (Main): Build number: 179

 

Edited August 20, 2024 by Grindmetal

[Moezilla]

3 minutes ago, Grindmetal said:

Modular Server perfomance Horrible too Cores stucks 

Server is single-threaded only, so you will see it load up one core. However, in the latest patches it seems that something such as pathfinding, or unit detection seems to adding more load than before 2.9.6. So missions that ran with medium load in 2.9.5 are now maxing out the core the server is running on.

[Grindmetal]

yes I know that
but Ryzen 2 cores 100% is the game itself the rest is not even used when playing 

[Rene Coulon]

7 hours ago, Moezilla said:

Server is single-threaded only, so you will see it load up one core. However, in the latest patches it seems that something such as pathfinding, or unit detection seems to adding more load than before 2.9.6. So missions that ran with medium load in 2.9.5 are now maxing out the core the server is running on.

I think you are seeing exactly what the problem is...and thats what mission builders and servers are all experiencing

[chichowalker]

My virtual squadron is thinking now of stopping liberation/retribution operations. With this kind of sim regression it is imposible to perform any mission with lot of units. I'm curious how people are invested more money in computer builds and now the sim run worst, with any kind of optimisation. I would suggest for future updates, to come back three patches ago and introduce all modules changes.

[Bounti30]

for my part
I reverted to version 2.9.5.55918
later versions are unplayable
question to ED
what does investigating mean on their part, have they found ways to improve?

[Glide]

Just wiggle the mouse.  You'll be fine.

[av8orDave]

I'm thinking I'm going to take a break from DCS. I've spent thousands of dollars with ED on modules, and I'm beyond frustrated. Any mission with a decent number of units brings my pretty powerful system to a crawl (Ryzen 9 7950X, RTX 4090, 64GB DDR5). I'll keep checking the forums and hopefully be back to playing when the performance improves.

[Rikus]

It´s strange because, the more powerfull hardware i have, less fps i have...

I think ED has to take a time to stop developing so many planes, terrains and Early Access, and add more resources to OPTIMICE the sim.

[Rene Coulon]

2 hours ago, chichowalker said:

My virtual squadron is thinking now of stopping liberation/retribution operations. With this kind of sim regression it is imposible to perform any mission with lot of units. I'm curious how people are invested more money in computer builds and now the sim run worst, with any kind of optimisation. I would suggest for future updates, to come back three patches ago and introduce all modules changes.

Thats exactly where I am at for now....just that the going back seems dangerous unless you really know what to do