reported One or more cores reaching 100%

[scommander2]

Hi @Special K, thanks for the explanation.

Another dumb question: should I assign P-Cores with dcs.exe by using the process affinity so that render/common cores will land on P-cores (hope)?  

There is my dcs.log:

dcs.log

[Special K]

vor 14 Stunden schrieb scommander2:

Hi @Special K, thanks for the explanation.

Another dumb question: should I assign P-Cores with dcs.exe by using the process affinity so that render/common cores will land on P-cores (hope)?  

There is my dcs.log:

dcs.log 242.81 kB · 3 Downloads

No, your core assignment is all good. Your P-cores are used for rendering already.

render cores: {4, 5, 6, 7, 0, 1, 2, 3}

You have 6 P-cores in hyperthreading mode, which means that logical cores 0-11 are your P-cores. They are split beween rendering and common pool. The highest performance class is with your logical cores 4-7, which are used for rendering also.

Your E-cores (12-19) are used for IO.

You might see performance issues due to Tacview, which I would recommend to disable and see if your situation gets better (if it is even bad).

[scommander2]

11 minutes ago, Special K said:

You might see performance issues due to Tacview, which I would recommend to disable and see if your situation gets better (if it is even bad).

Cool, thanks.

[-Scrat-]

Hi,

Same issue here.

I have just bought a new computer (Intel Ultra 9 285K) on which I have installed DCS.

It's really weird and it happens randomly, sometimes it is smooth and all of a sudden when I reload the game for instance, it becomes stuttering. 

Please find enclosed pic.

Scrat

Edited March 16 by -Scrat-

[Special K]

Am 16.3.2025 um 20:06 schrieb -Scrat-:

Hi,

Same issue here.

I have just bought a new computer (Intel Ultra 9 285K) on which I have installed DCS.

It's really weird and it happens randomly, sometimes it is smooth and all of a sudden when I reload the game for instance, it becomes stuttering. 

Please find enclosed pic.

Scrat

Please provide a dcs.log. We can not do anything without it.

[GumidekCZ]

Same here, one core reaching 100% in DCS menu and in mission also. This makes DCS freezing in less then 60 seconds - unplayable!

dcs.log

ull

Edited March 22 by GumidekCZ

[-Scrat-]

On 3/21/2025 at 3:23 PM, Special K said:

Please provide a dcs.log. We can not do anything without it.

Since the last update, it seems to be better. I will give it a few more tries and let you know if it reappears.

 

[Special K]

Am 21.3.2025 um 22:18 schrieb GumidekCZ:

Same here, one core reaching 100% in DCS menu and in mission also. This makes DCS freezing in less then 60 seconds - unplayable!

dcs.log 131.58 kB · 2 Downloads

ull

Do you use MSI afterburner?

The menu isn't multithreaded, it never was. So you are always on one core. Do you have anything in your Saved Games\DCS\Scripts\exports.lua?

[GumidekCZ]

On 3/23/2025 at 7:29 AM, Special K said:

Do you use MSI afterburner?

The menu isn't multithreaded, it never was. So you are always on one core. Do you have anything in your Saved Games\DCS\Scripts\exports.lua?

Thanks for reply.
My problem was some Lua code loop running on that single core just after reaching DCS menu, which result in quick freezing entire PC.
I solved it by deleting Saved Games / DCS folder - now I still dont know which Lua script there was the initiator of that loop - if time will allow, I will try to find that.

[Pillowcat]

10 minutes ago, GumidekCZ said:

I solved it by deleting Saved Games / DCS folder

Did the same, in result instead full load of single cpu core it becomes two cores fully loaded in main menu, so no positive changes, reverted old savefolder. Saying just to inform passing people that at least it is not ultimate solution to solve such problem.

[MAXsenna]

Guys! Never delete the Saved Games folders! Rename it! Some users reading might quickly jump to the "solution", and in the process completely wiping every setting for their controls without a backup. 

Cheers! 

[Special K]

Am 24.3.2025 um 10:22 schrieb GumidekCZ:

Thanks for reply.
My problem was some Lua code loop running on that single core just after reaching DCS menu, which result in quick freezing entire PC.
I solved it by deleting Saved Games / DCS folder - now I still dont know which Lua script there was the initiator of that loop - if time will allow, I will try to find that.

Usual suspects are Tacview and the OH6 Gunner Export

[- Sonic -]

I have similar problems too: I think they appeared after installing Tacview (immediately uninstalled with Revo Unistaller), but in any case the stutters so massive that they prevented the game or even froze during server loading. I inserted exclusions to the DCS folders in Windows Defender (which I then disabled) but I only had a partial improvement. There are still heavy stutters/freeze in the game. I downloaded the DCS log and analyzing it with ChatGPT a few problems came out, including the suggestion to empty the DCS cache (fxo and metashaders folder in Saved Games\DCS).
I also generated a log on Process Lasso and it shows a lowering of the priority of aitrack.exe (perhaps due to Process Lasso, which I never use but I only used to see how it went) and a strong presence of GIGABYTE AORUS ENGINE (which I don't think is good for the PC in general at this point).
what do you recommend I do?
via I attach the logs

dcs_log.log log_lasso.CSV

Edited March 25 by - Sonic -

[rob10]

3 hours ago, - Sonic - said:

I have similar problems too: I think they appeared after installing Tacview (immediately uninstalled with Revo Unistaller), but in any case the stutters so massive that they prevented the game or even froze during server loading. I inserted exclusions to the DCS folders in Windows Defender (which I then disabled) but I only had a partial improvement. There are still heavy stutters/freeze in the game. I downloaded the DCS log and analyzing it with ChatGPT a few problems came out, including the suggestion to empty the DCS cache (fxo and metashaders folder in Saved Games\DCS).
I also generated a log on Process Lasso and it shows a lowering of the priority of aitrack.exe (perhaps due to Process Lasso, which I never use but I only used to see how it went) and a strong presence of GIGABYTE AORUS ENGINE (which I don't think is good for the PC in general at this point).
what do you recommend I do?
via I attach the logs

dcs_log.log 210.21 kB · 1 download log_lasso.CSV 237.57 kB · 1 download

In your case, start by increasing your min and max pagefile to 32GB.  Currently you're 32 GB RAM and 5954 MB pagefile.  You're almost guaranteed to be running out of memory with that combo:

 System RAM: 32683 MB, Pagefile: 5954 MB

[- Sonic -]

ok  I will try to increase it (I remembre something about this)...in meanwhile I found a .lua file in script about Tacview; I've disinstalled it (I remember also that it give load problems), but this script remain...maybe it could be the problem also.

[Grindmetal]

new update Fixed 1 core Stuck for me 

null

[Urbi]

If DCS.exe only starts with the application priority set to "Normal," don't be surprised. If you leave the task manager open and wait for the processes to start DCS.exe, and after logging in and the subsequent authentication, set the priority to real-time, the sim will run with acceptable performance. After the last update, an orange icon appears in the taskbar. The priority should be set exactly when it's orange.

 

[- Sonic -]

I've to check with new update; tested with version before last after change pagefile (min32-max64). Well, freeze remain a issue. May could be a USB device (I want to change my rudder port, back port of motherboard have issue) and I have to test.
Maybe could be AITrack issue? I use a cheap webcam and could be intensive with CPU.
I've register the running of session, and how you can se CPU decrease in the same spot ok a freeze:

all cores running at 100% and GPU ad 90%...this mean bottleneck (and freeze) I suppose

Edited March 27 by - Sonic -

[- Sonic -]

After updating DCS and optimizing settings, the CPU load improved, but the last core still hits 100%, causing occasional CPU-bound warnings. However, DCS runs smoothly without stuttering, while the GPU has room for more load.

[Keith Briscoe]

Hello and thanks for all the input here.  I have Process Lasso and followed many instructions to get it going perhaps 6+ months ago.  It definitely helped at the time.  Since then, I did a significant bios update and there's been plenty of dcs updates as well.  My system runs pretty well, but I would like to go back to PL and clean up / start from scratch that is, have the simplest/cleanest set of core and affinity assignment.  Ideally, I will even remove PL altogether if I can find that performance is solid and stable without it.

I run in VR.  14900k, 4090, 64gb RAM, all NVME drives.

Rather than hunting and pecking through the ribbon bar drop downs, is there a straight-forward way to perhaps delete whatever PL profile I created and just run at 'system default'?

Thanks for any guidance.

[felipesm]

On 3/8/2025 at 6:47 PM, Special K said:

I have not seen a dcs.log of you yet.

Ignore the main menu. That is not multi-threaded.

Try this and let it run. Curious about the results though. It should only work with Core Ultra CPUs. If it does anyway.

 

cores.py 1.01 kB · 17 downloads

Hi @Special K , how are you? Here is my log file.

dcs.log

Edited May 6 by felipesm

[Special K]

vor 11 Stunden schrieb felipesm:

Hi @Special K , how are you? Here is my log file.

dcs.log 660.72 kB · 0 Downloads

Ok, so first things first - why do you disable 3 of your logical cores? That is 1,5 physical cores. There is literally no reason to do that. Remove the core affinity mask.

Then to all other issues:
- Your pagefile is too small, you want a pagefile of 32768 initial and max size.
- Your DCS is modded, your mods are causing a lot of errors.
- The scripts in the mission you are using have a lot of errors (for instance AI_Wingman_v1.0.lua)
- One of the above is crashing your DCS.
- You should think about disabling Tacview for performance reasons.

[felipesm]

12 hours ago, Special K said:

Ok, so first things first - why do you disable 3 of your logical cores? That is 1,5 physical cores. There is literally no reason to do that. Remove the core affinity mask.

Then to all other issues:
- Your pagefile is too small, you want a pagefile of 32768 initial and max size.
- Your DCS is modded, your mods are causing a lot of errors.
- The scripts in the mission you are using have a lot of errors (for instance AI_Wingman_v1.0.lua)
- One of the above is crashing your DCS.
- You should think about disabling Tacview for performance reasons.

So, I had tested the core affinity  , then you noticed that mask affinity.

I'm fixing other issues:

I changed the page file.

Removed the mods

I'm using other missions for now.

I disabled the tacview at special menu settings.

However, the 100% of usage core 1 still ocurring , but, i have observed that these issue only happen when i'm using the DCSMT.exe and not the dcs.exe , the MT version has more performance in all tests i've performed even thoug that the dcs.exe show that you are using MT. 

Notes:

My pc is freezing completely in 2d mode and when i switch to the destop to use the chrome for example. (only in MT executable)

I ran the cleanup and rapair on the launcher.

dcs.log

Edited May 7 by felipesm

[scommander2]

2 hours ago, felipesm said:

the MT version has more performance in all tests i've performed even thoug that the dcs.exe show that you are using MT. 

bin or mt-bin should contain the same binary code which is the MT version.

[Special K]

Am 7.5.2025 um 22:43 schrieb felipesm:

So, I had tested the core affinity  , then you noticed that mask affinity.

I'm fixing other issues:

I changed the page file.

Removed the mods

I'm using other missions for now.

I disabled the tacview at special menu settings.

However, the 100% of usage core 1 still ocurring , but, i have observed that these issue only happen when i'm using the DCSMT.exe and not the dcs.exe , the MT version has more performance in all tests i've performed even thoug that the dcs.exe show that you are using MT. 

Notes:

My pc is freezing completely in 2d mode and when i switch to the destop to use the chrome for example. (only in MT executable)

I ran the cleanup and rapair on the launcher.

dcs.log 87.32 kB · 1 Download

Yes, that seems to be a placebo mate. The binaries in bin and bin-mt are identical. DCS is full MT now since a longer while already.

You might want to double check your antivirus. Maybe you have a weird one, and not excluded the whole DCS installation directory but just one executable.