Multiplayer stutter, unrelated to frame rate

[ShamrockOneFive]

I'm having a weird problem. Been playing more multiplayer and in some instances I'll find myself in a situation where the whole game seems to be stuttering. The frame counter continues to report 40-60fps no problem (sometimes higher) but I see the whole screen stutter. It ruins shots and generally makes things difficult.

 

Any idea what's going on?

[Urra]

Had the same issue. To fix it I changed settings in nvidia control panel. I turned off fxaa setting. And changed max prerendered frames to 2 instead of 1 , On both regular and vr settings. I also disabled internal v-sync in the game but set to 'on' in the control panel. Internal v-sync seems broken.

 

I also set all the remaining settings like triple buffering listed to "on" except for transparency AA, and anisotropic filtering.

 

I also changed to play full screen, and changed my gsync setting to play only on full screen.

Edited November 19, 2017 by TunaEatsLion

[ShamrockOneFive]

Thanks Tuna! I'm going to check in on this and see if it helps.

[Urra]

Thanks Tuna! I'm going to check in on this and see if it helps.

Last thing. If you use trackir . I changed it to "precision" tracking with 100 for smoothing, in the trackir setup program. And the scale setting is set to 1, regardless of what your curve looks like.

 

Either one or all of these settings within both comments made it very smooth.

Edited November 26, 2017 by TunaEatsLion

[LLv24_Kuppis]

Had the same issue. To fix it I changed settings in nvidia control panel. I turned off fxaa setting. And changed max prerendered frames to 2 instead of 1 , On both regular and vr settings. I also disabled internal v-sync in the game but set to 'on' in the control panel. Internal v-sync seems broken.

 

I also set all the remaining settings like triple buffering listed to "on" except for transparency AA, and anisotropic filtering.

 

I also changed to play full screen, and changed my gsync setting to play only on full screen.

I had the same MP stuttering issue and I don´t know which one of these did the trick, but it helped. I have GTX 970. Thank you!

[ShamrockOneFive]

Revisiting this.

 

I play mostly single player and while playing that I see virtually no stutter at all at any time. Went into multiplayer a bunch recently and as soon as a bunch of aircraft are in the area I get stutters.

 

The FPS count in the top right corner remains high with it going no lower than 30fps and most of the time says mid 50s to 60 frames per second. I tried FXAA off, prer-endered frames to 2, tried with vsync on/off/nvidia on, etc. but no luck so far.

 

One line of inquiry I'm going with... I have 8gb DDR4 RAM installed right now. It seemed like enough but I asked online and a lot of guys are running 16gb for multiplayer. In another forum someone playing DCS said offline was fine with 8gb but you needed 16gb for online these days. Interesting... I wonder if IL-2 is largely the same.

 

Thoughts anyone?

[=TBAS=Sshadow14]

Nah you fine with 8GB
Heck you fine with 4GB

Running 4K Res Ultra Preset in Multiplayer.
Game only uses about 1.5-2GB of System Ram
and about 2.5-3.5Gb of Video Ram.

What server was this
If it was wings of liberty when near full then most of the stuttering is server side.
 

[ShamrockOneFive]

Experienced it both on Wings of Liberty and on 1CGS EU Normal.

 

Can't figure it out. Memory usage is high around this time... usually around 7.1GB utilization.

[=TBAS=Sshadow14]

wait you mean total system ram usage or JUST the IL2.exe Process

Total system ram not the issue
Total ram game is using is what you looking for.

[56RAF_Roblex]

I have seen stuttering happen when a server puts up too many messages.  An example might be when someone drops a lot of explosives on a dense concentration of targets and everyones screen get filled with twenty  'X has destroyed a factory facility'  messages.

[ShamrockOneFive]

wait you mean total system ram usage or JUST the IL2.exe Process

 

Total system ram not the issue

Total ram game is using is what you looking for.

 

Good point. I was looking at total system RAM and not specifically IL-2.

 

I have seen stuttering happen when a server puts up too many messages.  An example might be when someone drops a lot of explosives on a dense concentration of targets and everyones screen get filled with twenty  'X has destroyed a factory facility'  messages.

 

Doesn't seem to be related. Obviously if someone blows up a ton of stuff that'd have an impact but this doesn't seem to be specific to that.

 

It has more to do with me seeing multiple players at once I suppose...

Here's a question. In the multiplayer settings screen. What are your upload and download limits set at. Mine are at 1Mbps up and down.

[=TBAS=Sshadow14]

Set those limits to the limits of your internet connection specs.

Eg im on Wireless 4G (I get 25Mbit / 8Mbit on a bad day)
So i edited file and set
Download 10,240 (10Mbit)
Upload 4096 (4Mbit)
 

[ShamrockOneFive]

So I think I have this fixed. I need to test a few more times to be sure.

 

My internet connection is a 45Mbps down and a 10Mbps up. I set both to 10Mbps (maximum available on the sliders) and that seems to have sorted things out. I'll continue to test to be sure.

[SeaW0lf]

So I think I have this fixed. I need to test a few more times to be sure.

 

My internet connection is a 45Mbps down and a 10Mbps up. I set both to 10Mbps (maximum available on the sliders) and that seems to have sorted things out. I'll continue to test to be sure.

 

I need to try this. Good call.

[SeaW0lf]

No luck for me. Berloga still stutters like crazy, and I have a 60mb connection. They are too far away in the east and who knows what kind of line we have in between.

[ShamrockOneFive]

No luck for me. Berloga still stutters like crazy, and I have a 60mb connection. They are too far away in the east and who knows what kind of line we have in between.

 

Have you tried other servers? It's good to have some comparison points for sure.

 

My latest update is that the stutters are severely lessened but its still there a bit. Better though!

 

I wonder if we can make it go past 10Mbps in the settings.

[SeaW0lf]

Have you tried other servers? It's good to have some comparison points for sure.

 

My latest update is that the stutters are severely lessened but its still there a bit. Better though!

 

I wonder if we can make it go past 10Mbps in the settings.

 

I'll try this week when I have more time. But I don't think we come close to use 10mb yet. IIRC ROF uses less than 1mb, but I could be wrong. These dserver / netcode details are a bit of a mystery for most of us.

[kriptkori]

Firstly sorry for my english.

 

It jerks or microstutters at least once per a game. Someones call this LAG. I dont now the correct word. But what I mean by saying stutter is only freeze for 1/4 second then normal. (fps dropsfor half a seccond or 1) Not continuously. When this happens, ram usage reduces suddenly and remains as it is. Example. 5000mb ram in use, and it drops 4900 or 4850mb. Sometimes vram and pagefile usage drops during this process. Some of cpu cores usage rises when this hapens then normal. Some times not rising. Gpu and GPu power reduce only when this happens then normal. all of this happens only 1-2 second, and what I see on screen is 1/4 second or 2/4 second fps drops. It is  more noticeable If I move my hat-track when this happen. Because of cpu spike(cpu usage rising during this time) my head movement is affected from this process. I realized only once Vram usage rised during this process. But mostly system ram usage drops when this happen. Do you get this kind of issue?

Edited January 13, 2018 by kriptkori

[216th_Jordan]

This is some problem with Dserver/Netcode performance. I also get microstutters in MP and generally lower fps.

 

Try those general settings and see if they help: https://forum.il2sturmovik.com/topic/26746-trackir-and-ffb-working-together-cause-terrible-stuttering/?p=557302

[kriptkori]

This is some problem with Dserver/Netcode performance. I also get microstutters in MP and generally lower fps.

 

Try those general settings and see if they help: https://forum.il2sturmovik.com/topic/26746-trackir-and-ffb-working-together-cause-terrible-stuttering/?p=557302

Thank you friend. I will try it tomorrow and let you know.

[SeaW0lf]

I did some flying this week and both in WOL and Berloga I get stutters, more so on Berloga, when in furballs (or when the server is full) it looks like a stop motion movie. I tried the suggested settings with little results. I'll try Jordan ones.

 

We need to sort out the dserver / netcode limitations and see the extent of it so we can pin the culprit (s) for real. It is a bit frustrating to be testing and retesting settings to no avail. I imagine that in furballs, with explosions, pieces flying, bullets and wings and smoke, the current dserver must look like a cramped sardine can. I get stutters in BOX even in small furballs. I'll search the servers to see if there is one nearby (western Europe or US), then I can rule out server connection, especially in the US, when ROF runs smooth for me, even in furballs (although ROF mission builders knows the dserver limitations and go light on things).

Edited January 13, 2018 by SeaW0lf

[kriptkori]

This is some problem with Dserver/Netcode performance. I also get microstutters in MP and generally lower fps.

 

Try those general settings and see if they help: https://forum.il2sturmovik.com/topic/26746-trackir-and-ffb-working-together-cause-terrible-stuttering/?p=557302

Thanks for all you help. It seems to be fixed now. I change "Threaden optimization" to (off) on Nvidia Control Panel. And Now there is very little noticeable fps drop, sometimes there is no fps drop no  stutter. It seems to be fixed 90%. Thank you. I had been trying to solve this for 3 months. I didn't change vsync. It is default on nvida control panel. I limited frames via game settings 144hertz.

I did some flying this week and both in WOL and Berloga I get stutters, more so on Berloga, when in furballs (or when the server is full) it looks like a stop motion movie. I tried the suggested settings with little results. I'll try Jordan ones.

 

We need to sort out the dserver / netcode limitations and see the extent of it so we can pin the culprit (s) for real. It is a bit frustrating to be testing and retesting settings to no avail. I imagine that in furballs, with explosions, pieces flying, bullets and wings and smoke, the current dserver must look like a cramped sardine can. I get stutters in BOX even in small furballs. I'll search the servers to see if there is one nearby (western Europe or US), then I can rule out server connection, especially in the US, when ROF runs smooth for me, even in furballs (although ROF mission builders knows the dserver limitations and go light on things).

Thanks for all you help. It seems to be fixed now. I change "Threaden optimization" to (off) on Nvidia Control Panel. And Now there is very little noticeable fps drop, sometimes there is no fps drop no  stutter. It seems to be fixed 90%. Thank you. I had been trying to solve this for 3 months. I didn't change vsync. It is default on nvida control panel. I limited frames via game settings 144hertz.

[Babayega]

I had the same issue on the WOL server last night. It was on Kuban at a factory, a lot of aircraft in the area and very bad stuttering. Almost felt like lag but it wasnt. Funny thing is on an airfield there can be 15 aircraft taking off and landing and everything is smooth as butter and every other dogfight things were fine...something about getting close to this one made it stutter like crazy. 

 

I suspect it might have something to do with my MP settings. I never changed it from 1MB down and 1MB up until after. My speedtest regularly measures around 100MB down so I tried setting the DL to the max 10MB. I might have been limiting myself there. I will see tonight. 

Edited January 15, 2018 by JG_27_Frag

[Eclipse4349]

Any progress? I played my first significant amount of multiplayer tonight, and the stuttering on the WOL server around the port and factory was pretty bad. It was barely playable at times. I'm on a 100mb up and 100mb down connection, and my framerate was still as high as normal while the stuttering was going on. It seemed to be concentrated in that area of the Kuban map. Other areas seemed to be OK, and I had no issues just prior to that on Berloga. Could it be an issue with the Kuban map?

[ShamrockOneFive]

Reporting back in that I have not yet fixed this problem. Adjusting the settings to the max in the network settings panel helped reduce the issue but its still there.

 

The last couple of days I could tell if there was 6 or more players nearby because suddenly everything was getting "stop motiony." Advantage that I now have a sixth sense but disadvantage because I can't line up a shot when its happening.

 

Going to try turning off threaded optimization and see if that's it.

[stupor-mundi]

A few months ago I almost completely fixed my microstutter issues, in-game and nvidia control panel settings.

 

This made some sense to me, but when you really think about it, is still a bit weird. My framerate is mostly glued to 60/59 fps, and in some situations drops to about 45. That was before fixing the microstutters, and after. But 45 fps wouldn't look like microstutters, those are more something that happens around 5 times/second.

 

Subsequently, I noticed that any remaining microstutters were proportional  to:

* How loaded a server was -- worst just before a server crashes.

* The same thing, but spatially -- worst when flying through a very busy area.

When you're flying high altitude, and have trouble finding planes, you can judge by stutters that you've found a busy place.

 

The server, having trouble keeping up, shouldn't really impact the client application. And if it does, cpu wise for instance, it's still hard to figure why it would impact the work that's done by the graphics card. But everything seems to indicate that exactly that is happening.

 

Now, with the new update, was a good opportunity to observe what happens with heavily loaded servers, just before they crash. And indeed, the stutters were extreme, down to on occasion slideshow level. Clearly the client-server situation impacts what happens with the graphics, client side, which really shouldn't be the case.

 

[hausnm]

If you are a steam user use opencomposite instead of steam vr. In combination with oculus debug tool and asw turned off I got a FPS boost of about 20-25 FPS. Game is running smooth on ultra graphic settings even in multiplayer ! I love playing il2 online again . Yippee !

 

opencomposite can be downloaded online. Pls. Refer to google search