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ALT+TAB usage causing severe graphic stutter, freezing and CTD's


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Posted

Have begun to have severe graphic stutter, freezing and even CTD's whenever using ALT+TAB in Win 11 v 24H2 to tab move from DCS to another window, such as Discord, and open Edge reference page, even task manager window and back to DCS. The stuttering, freezing, etc. begins anywhere from a few seconds to up to 30 seconds after ALT+TAB back to DCS. 

Operating DCS is very smooth by itself, or even with a window open behind it, unless you ALT+TAB out of DCS and back in. 

I use DCS in Full screen mode. Have tried with mouse confined to monitor and not. I use only one monitor. 

Since it only began in last two to three weeks I suspected a Win update, NVIDIA update, or DCS update that occurred during that timeframe. First noticed the problem on or about 15-16 March 2025.

Here are my system specs:

Processor                       Intel® Core™ i9-14900K Processor (8X 3.20GHz + 16X 2.40GHz/36MB L3 Cache)

Memory                          96 GB [48 GB X2] DDR5-6000MHz Memory Module - Kingston Fury Renegade

Video Card                      NVIDIA GeForce RTX 4070 Ti SUPER - 16GB GDDR6X (DLSS 3.5 – AI-Powered Performance) MSI VENTUS 3X Black OC

Motherboard                  MSI MAG Z790 Tomahawk MAX WiFi - WiFi 7, ARGB Header (3), USB 3.2 Ports (2 Type-C, 8 Type-A), M.2 Slot (4)

Power Supply                 1000 Watt - CORSAIR RM1000x - Cybenetics Gold ATX 3.1, Fully Modular

Primary Storage             4TB Kingston Fury Renegade M.2 PCIe Gen 4 NVMe SSD -- Gen 4 Read: 7300 MB/s, Write: 7000 MB/s

Sound Card                    Creative Labs Sound Blaster Audigy FX [PCIE] -- 5.1 Channels, 192KHz/24-bit

Operating System          Windows 11 Pro w/ Windows Recovery USB - (64-bit)

Log Attached

dcs.log

  • Solution
Posted (edited)
2 hours ago, Dauntless 7 said:

Have begun to have severe graphic stutter, freezing and even CTD's whenever using ALT+TAB in Win 11 v 24H2 to tab move from DCS to another window, such as Discord, and open Edge reference page, even task manager window and back to DCS. The stuttering, freezing, etc. begins anywhere from a few seconds to up to 30 seconds after ALT+TAB back to DCS. 

Operating DCS is very smooth by itself, or even with a window open behind it, unless you ALT+TAB out of DCS and back in. 

I use DCS in Full screen mode. Have tried with mouse confined to monitor and not. I use only one monitor. 

Since it only began in last two to three weeks I suspected a Win update, NVIDIA update, or DCS update that occurred during that timeframe. First noticed the problem on or about 15-16 March 2025.

hello. one error i see is for a mod. you should disable all mods and then run a repair. also rename the MODS folder to .BAD. something amiss there. 

i ran your log thru the log analyzer.

Error
unexpected symbol near ','
Line
27
Script
C:\Users\edwar\Saved Games\DCS\Mods/tech/Large National Power P...
Error
'}' expected (to close '{' at line 59) near 'index'
Line
65
Script
C:\Users\edwar\Saved Games\DCS\Mods/tech/NavyEquipment/GTR18.lu...

Advice
 
Disable Core Parking.
Verify that this is configured correctly in Windows:
Game Mode disabled
Hardware accelerated GPU scheduling disabled
Core Isolation disabled

Edited by silverdevil
  • Like 1
  • Thanks 2

AKA_SilverDevil Join AKA Wardogs Email Address My YouTube

“The MIGS came up, the MIGS were aggressive, we tangled, they lost.”

- Robin Olds - An American fighter pilot. He was a triple ace.

The only man to ever record a confirmed kill while in glide mode.

Posted
20 hours ago, silverdevil said:

hello. one error i see is for a mod. you should disable all mods and then run a repair. also rename the MODS folder to .BAD. something amiss there. 

i ran your log thru the log analyzer.

Error
unexpected symbol near ','
Line
27
Script
C:\Users\edwar\Saved Games\DCS\Mods/tech/Large National Power P...
Error
'}' expected (to close '{' at line 59) near 'index'
Line
65
Script
C:\Users\edwar\Saved Games\DCS\Mods/tech/NavyEquipment/GTR18.lu...

Advice
 
Disable Core Parking.
Verify that this is configured correctly in Windows:
Game Mode disabled
Hardware accelerated GPU scheduling disabled
Core Isolation disabled

Per your suggestions:
1)Game Mode and HAGS were already off.

2)Removed mods, ran repair. Had ran several repairs in the past two weeks, but not with mods removed. Put mods back on after repair.

3)Disabled Core Parking in Registry.

4) Turned off Core Isolation.

Ran DCS and utilized ALT+TAB to go back a forth from DCS to Discord and an open Edge window reference multiple time and have not yet encountered the problem again so far.
In fact DCS is running smoother now on this Win 11 PC I have only had for a couple of months than it has so far.
I suspect Core Parking was the primary culprit.
Thanks for the assist.

  • Like 3
Posted
1 hour ago, Dauntless 7 said:

Per your suggestions:
1)Game Mode and HAGS were already off.

2)Removed mods, ran repair. Had ran several repairs in the past two weeks, but not with mods removed. Put mods back on after repair.

3)Disabled Core Parking in Registry.

4) Turned off Core Isolation.

Ran DCS and utilized ALT+TAB to go back a forth from DCS to Discord and an open Edge window reference multiple time and have not yet encountered the problem again so far.
In fact DCS is running smoother now on this Win 11 PC I have only had for a couple of months than it has so far.
I suspect Core Parking was the primary culprit.
Thanks for the assist.

good to hear and glad to help.

AKA_SilverDevil Join AKA Wardogs Email Address My YouTube

“The MIGS came up, the MIGS were aggressive, we tangled, they lost.”

- Robin Olds - An American fighter pilot. He was a triple ace.

The only man to ever record a confirmed kill while in glide mode.

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