Sporadic Stuttering

[dresoccer4]

i9-14900kf
rtx 4090
64gb ram
2tb ssd

I have newly installed DCS on my new PC and with maxed out graphics It's running a smooth 120fps...most of the time. But sporadically the game has heavy stuttering and the fps drop to the teens for a second or two. This seems to happen more frequently when switching camera modes or performing heavy maneuvers. It's quite jarring and has even caused me to crash before.

This happen to anyone else? Hoping for some tips or tricks to stop this from happening. 

UPDATE: I caught one of the stutters in my screenshot

Edited December 7, 2024 by dresoccer4

[onib89]

I've notice that too since the previous update. also random freeze for 1-2 seconds very very randomly and 1 or 2 times during a 2 hours flight

10900k

4080 strix gamingOC

64gb ram

win 11

2tb  m2

dcs.log

Edited December 8, 2024 by onib89

[sleighzy]

Please attach your "C:\Users\username\Saved Games\DCS\Logs\dcs.log" file (might just be a text document named "dcs" if your Windows is hiding file extensions). Make sure you've loaded all the way into the game and replicated the issue and not just the launcher.

Edited December 8, 2024 by sleighzy

[Sparviero1978]

It seems the same problem that I post some days ago for VR (here 7800x3D/4080/64gb6k). I also notice that if you refly the mission, the massive drops strongly reduced.

 

 

 

 

[LOW_Hitman]

If HAGS is set to on - give it a try and set it to OFF. On my rig every single game is performing way better with hags turned off.

[williehayesjr]

Where the hell is hags? Thanks.

[sleighzy]

24 minutes ago, williehayesjr said:

Where the hell is hags? Thanks.

System settings in Windows. Go to the graphics settings and its "Hardware-accelerated GPU scheduling".

[MAXsenna]

2 hours ago, williehayesjr said:

Where the hell is hags? Thanks.

@sleighzy beat me to it. Just added screen grabs, and add DCS.exe application for "High performance" while you're add it!

Edited December 13, 2024 by MAXsenna

[sleighzy]

Thanks @MAXsenna, nice followup. I'll have to keep those screenshots in my back pocket, cheers

 

[Miro]

Same here, flat screen, my game freezes ocasionally, what i saw in ctrl+pause window - rendering thread bound

[Nealius]

I have horrible stutters specifically when flying Channel in the Mosquito, at higher graphics settings, in 2D. Which is quite bizarre because the exact same flight in VR was smooth as butter, and the same high graphics settings in 2D do not cause stutters in any other maps or modules. 

[rrutko]

I am have the same freeze/stutter issue. I turned off HAGS (was ON) and un parked all cores. Attached is my log. There where 2 big spikes and 1 small one. Game updated today 12/14/24.

EDIT: Watching the CPU usage in resource monitor and I am using around 80% cpu. When the Stutter/freeze happens CPU usage drops to 20% for about a second or so. Only happens when in the modules not within main menus.

I9 12900k, 4090, 128g DD4, 2G NVME.

 

dcs.log.old old log file was before parked core disabled. Same stutters/freeze x 3.

dcs.log

Edited December 15, 2024 by rrutko

[Porkbrain]

On 12/10/2024 at 3:33 PM, LOW_Hitman said:

If HAGS is set to on - give it a try and set it to OFF. On my rig every single game is performing way better with hags turned off.

Thanks for that, turning that off has cured the 1 to 2 second freezes which were randomly spoiling my normally smooth VR flights. 

[unclesneep]

It's weird.. I wiped my machine and installed a new ssd.  After reinstalling dcs and my pimax software..dcs has been randomly performing very poorly.  

 

I9 14900kf, 64gb ddr5 6000 , rtx 3080.

2d I'm getting 300fps..but random frame and cpu spikes down to 10fps in the main menu.

In vr the spikes make the game unplayable.  

I turned off hags, have exclusions in defender, made sure cpu isn't parked.  Dcs set to high priority.  At first I thought the mouse polling issue was back because the spikes were especially bad when moving the mouse on the screen.. changed polling rate to 500mhz..but it didn't seem to help.

 

It doesn't happen all the time but it does happen often.  Sometimes if it happens, I can close dcs, then relaunch and it won't happen for the entire session.

When I'm getting constant frame spikes, I go into task manager and can see that my cpu is only running at 30%.  It's only impacting dvs, and not any other game.. so frustrating.

 

 

[LOW_Hitman]

vor 12 Stunden schrieb unclesneep:

It's weird.. I wiped my machine and installed a new ssd.  After reinstalling dcs and my pimax software..dcs has been randomly performing very poorly.  

 

I9 14900kf, 64gb ddr5 6000 , rtx 3080.

2d I'm getting 300fps..but random frame and cpu spikes down to 10fps in the main menu.

In vr the spikes make the game unplayable.  

I turned off hags, have exclusions in defender, made sure cpu isn't parked.  Dcs set to high priority.  At first I thought the mouse polling issue was back because the spikes were especially bad when moving the mouse on the screen.. changed polling rate to 500mhz..but it didn't seem to help.

 

It doesn't happen all the time but it does happen often.  Sometimes if it happens, I can close dcs, then relaunch and it won't happen for the entire session.

When I'm getting constant frame spikes, I go into task manager and can see that my cpu is only running at 30%.  It's only impacting dvs, and not any other game.. so frustrating.

 

 

Maybe you could test the following:

- deactivate hyperthreading

- set threaded optimization to OFF within the nvidia controll panel

[PLUTON]

Same for me

[Tazer83]

i have the exact same issue on  a ryzen 9 7950x3d, 4070 and 32 gb ram. Ive tried HAGS OFF, Disabled core 0, Parked cores, you name it. Still can not find a solution to the problem.

dcs.log

[Futurecvsh]

same problem, after update sometimes fps instability, RTX 4090 here, before there was no this problem

[dutchili]

let's not discuss windows or hardware settings. We 'all' noticed this since the last update. The root cause is in the (full and complete) change log. Something for ED to figure out.

[Flappie]

11 hours ago, dutchili said:

let's not discuss windows or hardware settings. We 'all' noticed this since the last update. The root cause is in the (full and complete) change log. Something for ED to figure out.

I didn't.

I did experience a heavy drop in performance in the remastered F-5E, though.

[corb]

This is still an issue on my rig. 

14900K, 96 GB 6600 Ram, Asus RTX 5090 and Pimax Crystal Light. 

Getting light to moderate to horrible stuttering of the terrain when looking sideways from Hornet cockpit. Bulding windows are double during the stuttering. 

When doing a head wobble like Lionell Richie, I see double of all the dials in cockpit. Inside DCS the green graph in FPS monitor window, bounces a lot, with lots of spikes. And this is even if I limit to 60 FPS with Half FPS Locked in Pimax Play. I get stable 60 FPS all the time, but still stuttering. I can also get 120 fps stable with stuttering if I lower some settings and use QuadViews. 

I have tried ProcessLasso with P-Cores only, enabled all Parked Cores, tinkered with every setting I could think of. Both in Pimax Play, Nvidia Control Panel. Switched DP on the 5090. 

Reinstalled Nvidia drivers, tried older drivers. Reinstalled DCS and swtiched to another PCIE 4.0 NVME. Even changed Mouse polling rate to 125. 

Only thing left is complete format of C drive to reinstall Windows from scratch. Unless someone here can think of the obvious sollution. 

Edited April 8 by corb

[sleighzy]

9 hours ago, corb said:

This is still an issue on my rig. 

14900K, 96 GB 6600 Ram, Asus RTX 5090 and Pimax Crystal Light. 

Getting light to moderate to horrible stuttering of the terrain when looking sideways from Hornet cockpit. Bulding windows are double during the stuttering. 

When doing a head wobble like Lionell Richie, I see double of all the dials in cockpit. Inside DCS the green graph in FPS monitor window, bounces a lot, with lots of spikes. And this is even if I limit to 60 FPS with Half FPS Locked in Pimax Play. I get stable 60 FPS all the time, but still stuttering. I can also get 120 fps stable with stuttering if I lower some settings and use QuadViews. 

I have tried ProcessLasso with P-Cores only, enabled all Parked Cores, tinkered with every setting I could think of. Both in Pimax Play, Nvidia Control Panel. Switched DP on the 5090. 

Reinstalled Nvidia drivers, tried older drivers. Reinstalled DCS and swtiched to another PCIE 4.0 NVME. Even changed Mouse polling rate to 125. 

Only thing left is complete format of C drive to reinstall Windows from scratch. Unless someone here can think of the obvious sollution. 

Attach your C:\Users\username\Saved Games\DCS\Logs\dcs.log file (may just be a text document named "dcs" in your Windows is hiding file extensions). Make sure to jump into a mission before grabbing the log. What version of Windows are you on?

Edited April 9 by sleighzy

[corb]

1 hour ago, sleighzy said:

Attach your C:\Users\username\Saved Games\DCS\Logs\dcs.log file (may just be a text document named "dcs" in your Windows is hiding file extensions). Make sure to jump into a mission before grabbing the log. What version of Windows are you on?

Im on Windows 11, latest 24H2. 

Attached my log as well now. 

dcs.log

[sleighzy]

10 hours ago, corb said:

Im on Windows 11, latest 24H2. 

Attached my log as well now. 

dcs.log 125.47 kB · 6 downloads

The logs show that you've disabled half your CPU?

system  affinity mask: 11111111111111111111111111111111
process affinity mask: 1111111111111111
...
unavailable cores: {16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31}

The DCS log analyzer states the following:

Remove the core-affinity mask from your CPU.

One of the support folk in the DCS channel commented on the following, as I noticed that the log didn't contain Process Lasso messages: "In this specific case, their CPU doesn't use any of the E cores as IO cores but uses the other pools for it."

Have you applied an affinity to DCS either via registry setting, adding this config to your DCS autoexec.cfg file, passed these params in your shortcut to the DCS.exe, Process Lasso, etc.?

[corb]

2 hours ago, sleighzy said:

The logs show that you've disabled half your CPU?

system  affinity mask: 11111111111111111111111111111111
process affinity mask: 1111111111111111
...
unavailable cores: {16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31}

The DCS log analyzer states the following:

Remove the core-affinity mask from your CPU.

One of the support folk in the DCS channel commented on the following, as I noticed that the log didn't contain Process Lasso messages: "In this specific case, their CPU doesn't use any of the E cores as IO cores but uses the other pools for it."

Have you applied an affinity to DCS either via registry setting, adding this config to your DCS autoexec.cfg file, passed these params in your shortcut to the DCS.exe, Process Lasso, etc.?

Ive tried so many things I have lost track of all the changes I have tried. But Process Lasso has set DCS to only use P-Cores and not the E-cores. I have also set DCS to have CPU priority. But I never noticed any change between before and after process lasso.

I have also change something in registry to force never have Parked Cores. Not sure what that does but before that change, lots of cores was parked. But now no cores are parked.