[SLOW PERFORMANCE] Unusually long load times and close times

[SOLIDKREATE]

Hello,

As of the last update I have been experiencing unusually long load times launching DCS. 

 

1. Click the icon in the taskbar.
2. Usually one or two min go by before DCS will boot up.
3. Once it does, it take a while for it to log me in.
4. When I open the mission editor on a mission that I have saved, it takes an unusually long time to load. 
5. Closing the game just hangs and hangs, then crashes out.

 

This is on a fresh installation. GPU drivers are up to date. BIOS has been flashed as of yetserday. This happens both in regular DCS and in the MT version.

LOG FILES.zip

Edited June 27 by SOLIDKREATE

[silverdevil]

On 6/27/2025 at 3:21 AM, SOLIDKREATE said:

Hello,

As of the last update I have been experiencing unusually long load times launching DCS. 

 

1. Click the icon in the taskbar.
2. Usually one or two min go by before DCS will boot up.
3. Once it does, it take a while for it to log me in.
4. When I open the mission editor on a mission that I have saved, it takes an unusually long time to load. 
5. Closing the game just hangs and hangs, then crashes out.

 

This is on a fresh installation. GPU drivers are up to date. BIOS has been flashed as of yetserday. This happens both in regular DCS and in the MT version.

hello

below is just a compilation of the APP stages. you can see all the times.

2025-06-27 07:10:50.185 INFO    APP (Main): Command line: "C:\Program Files\Eagle Dynamics\DCS World\bin/DCS.exe" --restarted
2025-06-27 07:10:50.185 INFO    APP (Main): DCS/2.9.17.11733 (x86_64; MT; Windows NT 10.0.22631)
2025-06-27 07:10:50.185 INFO    APP (Main): Application revision: 251733
2025-06-27 07:10:50.185 INFO    APP (Main): Renderer revision: 26305
2025-06-27 07:10:50.185 INFO    APP (Main): Terrain revision: 26363
2025-06-27 07:10:50.185 INFO    APP (Main): Build number: 344
2025-06-27 07:10:50.185 INFO    APP (Main): CPU cores: 24, threads: 32, System RAM: 48869 MB, Pagefile: 21504 MB
2025-06-27 07:10:50.185 INFO    APP (Main): CPU info:
2025-06-27 07:10:53.411 INFO    APP (Main): Successfully got authorization data.
2025-06-27 07:11:04.594 INFO    APP (Main): options.graphics =
2025-06-27 07:11:08.577 INFO    APP (Main): gDescription: "NVIDIA GeForce RTX 4070 Ti SUPER" gVendorId: 4318 gDeviceId: 9989 gMemory: 16063 MB
2025-06-27 07:11:15.920 INFO    APP (Main): Loaded C:\Program Files\Eagle Dynamics\DCS World\Scripts\Hooks\common.lua
2025-06-27 07:11:15.921 INFO    APP (Main): Loaded C:\Program Files\Eagle Dynamics\DCS World\Scripts\Hooks\multislot.lua
2025-06-27 07:11:15.921 INFO    APP (Main): Loaded C:\Program Files\Eagle Dynamics\DCS World\Scripts\Hooks\voicechat.lua
2025-06-27 07:11:15.922 INFO    APP (Main): Loaded C:\Program Files\Eagle Dynamics\DCS World\Scripts\Hooks\webGUI.lua
2025-06-27 07:11:15.922 INFO    APP (Main): Loaded C:\Program Files\Eagle Dynamics\DCS World\Scripts\Hooks\webRTCwebSocket.lua
2025-06-27 07:12:09.964 INFO    EDTERRAINGRAPHICS41 (520): 0.000872s Loaded reference file "reddeliciousapple" buffers: 0
2025-06-27 07:12:10.068 INFO    EDTERRAINGRAPHICS41 (520): remapper.deformers is not empty
2025-06-27 07:12:19.601 INFO    Dispatcher (Main): loadMission C:\Users\SOLIDK~1\AppData\Local\Temp\DCS\tempMission.miz
2025-06-27 07:12:19.601 INFO    WORLDGENERAL (Main): loading mission from: "C:\Users\SOLIDK~1\AppData\Local\Temp\DCS\tempMission.miz"
2025-06-27 07:12:19.603 INFO    APP (Main): use_xRay: yes
2025-06-27 07:12:19.603 INFO    APP (Main): netfm_enable_coeff_switching: yes
2025-06-27 07:12:42.869 INFO    Dispatcher (Main): apply random seed = 8363148
2025-06-27 07:12:50.338 INFO    APP (Main): MissionSpawn:initScript
2025-06-27 07:12:50.338 INFO    APP (Main): MissionSpawn:spawnCoalition neutrals
2025-06-27 07:12:50.338 INFO    APP (Main): MissionSpawn:spawnCoalition red
2025-06-27 07:12:50.338 INFO    APP (Main): MissionSpawn:spawnVehicles 68
2025-06-27 07:12:50.405 INFO    APP (Main): MissionSpawn:spawnCoalition blue
2025-06-27 07:12:50.405 INFO    APP (Main): MissionSpawn:spawnPlanes 2
2025-06-27 07:12:50.408 INFO    APP (Main): MissionSpawn:spawnLocalPlayer 101,F-15C
2025-06-27 07:12:50.632 INFO    APP (Main): dbox not found , skip
2025-06-27 07:14:19.784 INFO    APP (Main): application shutdown

within these steps, you can also see all the DLLs being loaded.

2025-06-27 07:10:53.552 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/dx11backend.dll
2025-06-27 07:10:53.552 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/dxgui_edge_render.dll
2025-06-27 07:10:53.552 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/edterrain4.dll
2025-06-27 07:10:53.553 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-direct_output.dll
2025-06-27 07:10:53.553 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-dxgui.dll
2025-06-27 07:10:53.553 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-dxguiWin.dll
2025-06-27 07:10:53.553 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-ED_demosceneAPI.dll
2025-06-27 07:10:53.553 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-guid.dll
2025-06-27 07:10:53.553 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-gui_axes_tune.dll
2025-06-27 07:10:53.553 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-gui_demoscene.dll
2025-06-27 07:10:53.554 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-gui_nodes_map.dll
2025-06-27 07:10:53.554 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-gui_overlay.dll
2025-06-27 07:10:53.554 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-gui_ruler.dll
2025-06-27 07:10:53.554 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-gui_user_container.dll
2025-06-27 07:10:53.554 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-gui_video_player.dll
2025-06-27 07:10:53.554 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-gui_webview.dll
2025-06-27 07:10:53.554 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-librs232.dll
2025-06-27 07:10:53.554 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-magvar.dll
2025-06-27 07:10:53.554 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-md5.dll
2025-06-27 07:10:53.555 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-mime.dll
2025-06-27 07:10:53.555 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-minizip.dll
2025-06-27 07:10:53.555 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-MissionGenerator.dll
2025-06-27 07:10:53.555 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-reg.dll
2025-06-27 07:10:53.555 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-socket.dll
2025-06-27 07:10:53.555 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-terrain.dll
2025-06-27 07:10:53.555 INFO    EDCORE (Main): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/lua-textutil.dll
2025-06-27 07:10:53.566 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/CockpitBase.dll
2025-06-27 07:11:04.485 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/tech/SouthAtlanticAssets/bin/SouthAtlantic.dll
2025-06-27 07:11:04.498 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/AV8BNA/bin/AV8B_AI.dll
2025-06-27 07:11:04.508 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/C-101/bin/C101Core.dll
2025-06-27 07:11:04.519 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/ChinaAssetPack/bin/CAP_AI.dll
2025-06-27 07:11:04.529 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/ChinaAssetPack/bin/JF-17_AI.dll
2025-06-27 07:11:04.544 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/Christen Eagle II/bin/CE2_AI.dll
2025-06-27 07:11:04.554 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/F-15E/bin/F15E_AI.dll
2025-06-27 07:11:04.562 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/F-4E/bin/HeatblurCore.dll
2025-06-27 07:11:04.571 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/F-4E/bin/HeatblurComponents.dll
2025-06-27 07:11:04.579 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/F-4E/bin/HeatblurDCSBase.dll
2025-06-27 07:11:04.587 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/F-4E/bin/F-4E-AI.dll
2025-06-27 07:11:04.598 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/F14/bin/F14-AI.dll
2025-06-27 07:11:04.606 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/F4U-1D/bin/F4U_AI.dll
2025-06-27 07:11:04.625 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/M-2000C/bin/M2KC_AI.dll
2025-06-27 07:11:04.645 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/MiG-21bis/bin/MiG21_AI.dll
2025-06-27 07:11:04.664 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/Mirage-F1/bin/MirageF1Core.dll
2025-06-27 07:11:04.682 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/OH-58D/bin/OH58D_AI.dll
2025-06-27 07:11:04.699 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/aircraft/SA342/bin/SA342_ai.dll
2025-06-27 07:11:04.719 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/services/CaptoGlove/bin/edCaptoGlove.dll
2025-06-27 07:11:04.740 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/services/LeapMotion/bin/edLeapMotion.dll
2025-06-27 07:11:04.763 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/services/SensoryxVRFree/bin/edSensoryxVRFree.dll
2025-06-27 07:11:04.782 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/services/VoiceChat/bin/VoiceChat.dll
2025-06-27 07:11:04.801 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/CoreMods/services/jsAvionics/bin/jsAvionics.dll
2025-06-27 07:11:05.848 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/tech/Supercarrier/bin/edSupercarrier.dll
2025-06-27 07:11:05.855 INFO    GRAPHICSVISTA (520): renderer: 'dx11backend.dll'
2025-06-27 07:11:13.438 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/F-15C/bin/F15CCWS.dll
2025-06-27 07:11:14.570 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/F-15C/bin/F15.dll
2025-06-27 07:11:15.261 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/F-16C/bin/F16C.dll
2025-06-27 07:11:17.088 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/F14/bin/F14-HeatblurCommon.dll
2025-06-27 07:11:29.206 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/F14/bin/F14-FlightModel.dll
2025-06-27 07:11:42.094 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/F14/bin/F14-Avionics.dll
2025-06-27 07:11:56.714 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/F4U-1D/bin/F4U_Avionics.dll
2025-06-27 07:11:56.744 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/F4U-1D/bin/F4U_FlightModel.dll
2025-06-27 07:12:08.360 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/P-47D-30/bin/P47D30.dll
2025-06-27 07:12:10.036 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/FA-18C/bin/FA18C.dll
2025-06-27 07:12:10.636 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/MiG-29/bin/MiG29.dll
2025-06-27 07:12:10.636 INFO    EDCORE (520): Loaded C:/Program Files/Eagle Dynamics/DCS World/bin/dxgui_edge_render.dll
2025-06-27 07:12:14.885 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/MiG-29/bin/MIG29CWS.dll
2025-06-27 07:12:15.602 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/A-10C_2/bin/A10.dll
2025-06-27 07:12:17.889 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/A-10C_2/bin/Cockpit_A10Common.dll
2025-06-27 07:12:21.021 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/A-10C_2/bin/Cockpit_A10C.dll
2025-06-27 07:12:41.475 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/A-10C_2/bin/Cockpit_A10C_2.dll
2025-06-27 07:14:00.966 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/A-10A/bin/A10ACWS.dll
2025-06-27 07:14:02.174 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/A-10A/bin/A10A.dll
2025-06-27 07:14:04.737 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/MB-339/bin/MB339A.dll
2025-06-27 07:14:05.523 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/F-5E 2024/bin/F5E.dll
2025-06-27 07:14:19.779 INFO    EDCORE (20244): Loaded C:/Program Files/Eagle Dynamics/DCS World/Mods/aircraft/C-101/bin/ABaseC101.dll

my guess for the delay is your AV software is scanning all these items causing delays.

[SOLIDKREATE]

11 minutes ago, silverdevil said:

hello

below is just a compilation of the APP stages. you can see all the times.

my guess for the delay is your AV software is scanning all these items causing delays.

 

I dont have any AV. I did a fresh install of Windows, that seemed to fix it.

[silverdevil]

23 minutes ago, SOLIDKREATE said:

I dont have any AV. I did a fresh install of Windows, that seemed to fix it.

unless it is disabled on purpose, Windows Defender is on by default.

good to hear you fixed it.

you should mark your post as the solution. helps others in the future.

good luck and clear skies.

[peachpossum]

is reinstalling Windows really a solution? Could the solution get a little finer grained than that?

[SOLIDKREATE]

It's what it took. I think maybe some security update broke DCS. Afresh instal of that didn't work.

[Czar66]

I just found that disabling "Shader Cache Size" on nVidia control panel (maybe there is something similar on AMD cards too) triples or even quadruples loading times in DCS.

Consider enabling that function if your disabled it or keep at 'driver default'.

I did disabled it for testing purposes and found out long loading times in DCS.

Enabling at 5gb made DCS go from 3 minutes 50 seconds + at loading a mission to only 50 seconds. Probably same applies to leaving at 'Driver Default'.

[Czar66]

Just tested on "Driver Default" after posting the text above. Yep, mission loads in 50 seconds as well.

[SOLIDKREATE]

Yeah mine too. I uninstalled my driver then did a fresh install. And just left everything alone.

[Akula]

Foreword; Used both executables (bin and Bin MT folders). Tested in the Caucasus map, single player on a windows 11 rig.

 

 

As of July 23rd, 2025 The latest update (DCS 2.9.18.12722) I did a little experiment as I Also experience significantly long load times. If you're running a 13900k or 14900k you'll find this interesting. 

- Two updates ago I got super long load times and stuttering in DCS... Disabled Hyper-threading in the BIOS, POOF! Problem solved, no issues and everything was butter smooth 

- Today, out of curiosity, I updated to the latest DCS, ENABLED hyper-threading in the BIOS and tried DCS again. Stuttering gone but Stupid long load times to the point where I get the windows blue circle thingy on the mouse and asked to close the program or wait. If I wait, DCS works but I have to wait a long time. Sooooo I

- DISABLED hyper-threading again and checked... All back to smooth, regular short load times, no lagging, no stuttering. All good. 

BTW, Windows 11 is fully up to date but I think that fixed the stuttering but not the long load times and lagging.

I don't know why this is hapenning but it seems to be the new norm for me. Hyperthreading on, games run like crap. Hyperthreading off, games run smooth as butter with no issues. 

 

Has anyone noticed this as well?

 

[Sezai]

After today's update I experience exactly the same thing. Devastatingly long loading times and even launch screen pops up super slow. When I start the DCS the fan speed goes up slightly then almost goes sleeping. Usually the fans should have been spinning fast. What I noticed, even the video in launch screen runs with stutters, I am not even mentioning the game; my FPS dropped from 72 solid to 20 max.. 

I did numerous methods, thx to Chatgbt, but the problem still exists. Then I read this forum and disable the Hyper Threading, unfortunately also this did not help. 

Since yesterday I had no issues at all...

Let me know if anyone has an idea

 

Edited Wednesday at 10:31 PM by Sezai