The Display Fusion app has high single thread usage even when idle on desktop (screenshot). Which causes stuttering in game.
I must quit and relaunch the app for the issue to go away. The issue reoccurs again.
Seems to happen after a gaming session, will need to test more to determine if other tasks trigger this issue.
I have also "Reset All Settings to Default"
Anyone else have experienced this or have any suggestions? Let me know if you need more info. Thanks!
MoBo: MSI MPG Z490 GAMING PLUS (MS-7C75)
CPU: i5-10600K
GPU: 4070 Ti
Monitors: GIGABYTE M27Q P [Main(DP)] // Dell P2217H [2nd(HDMI)]
OS: Win 11 22H2

Witcher 3 and Fortnite, so far.

Update (5/9/23): Used system for browsing, no gaming session, and the issue occurred again.
Next step: Reset All Settings to Default > enable L3 logging > restart system > leave system idle for the ~day > export logs and attach.

File attached.

Update: I left the system idle for ~10 hours (performed "Next step:" in post #3 and left system). No issue with CPU usage when I checked.
Launched Chrome to check this discussion, now the single CPU thread is stuck at ~half utilization and the DF process is using ~5% CPU (screenshots).
With the original post, DF was using ~10% CPU.

Update 2 (1 hour elapsed): Left system idle after posting. The issue progressing to the original posted issue ( (new screenshots)

Update 3 (1 hour elapsed since update 2) Watched YouTube for an hour (screenshots)

Update: Seems like the issue is caused when waking computer from sleep. Maybe display adapters initializing is causing the issue? I will test and verify that the issue occurs with no input and just waking system from sleep.

Update 2: tested theory.
Restarted system > let it go to sleep > woke up system ~4 times over a 10 hour period. The issue reoccurs.

Next step: test with a fresh Windows 11 install, when I get a chance.

Issue does not occur with DisplayFusion taskbars disabled.
The taskbars is the only feature I use as of now, I'm a new user and discovering all the features of the application.
Is there a resolution or workaround?

Update: When the issue occurs, the taskbar on the second monitor becomes unresponsive and application icons flash. Unable to click on the Windows start menu or other items on the taskbar.
Any update on the issue? Do I need to wait for an update for a fix?

Seeing the same here as well, CPU usage settles in pretty solid at 12-16% and icons in the second monitor start flashing and become unresponsive. Getting pretty frustrated with it, I am running the beta 3 on Windows 11 version 22H2 OS Build 22621.1702

I am beyond frustrated with the v10.x release. In all the years I have been using DisplayFusion, I have never seen such a problematic update from them.
I miss running DisplayFusion but I can't use it anymore until the CPU usage problem is fixed.
Eagerly awaing the next beta to see if it improves.

Same boat. I've uninstalled it till there is an update or fix...

Owen, I already sent over my troubleshooting info in this thread:

https://www.displayfusion.com/Discussions/View/100-is-killing-pc-performance/?ID=d1ff082c-3066-4cd4-8289-a1219f32795c

Waiting on the next beta to see if the problem is resolved. Beta 3 did not fix it.

Installed Steam version > updated to 10.1-Beta3 > "Reset All Settings to Default" > enabled L1 log > exported after ~30 min: file attached.

Update: Looks like the issue is persisting (screenshots)

Update: Video of laggy taskbar and flashing icons on second monitor

Thanks for the update and sounds like a plan

Flashing Icons seems to be better and CPU usage with Beta 4, but now DF crashes and I have to restart it. Seeing this in the application event log.

"The program DisplayFusion.exe version 10.0.99.104 stopped interacting with Windows and was closed. To see if more information about the problem is available, check the problem history in the Security and Maintenance control panel."

"Fault bucket 1527129982373481576, type 5
Event Name: AppHangXProcB1
Response: Not available
Cab Id: 0

Problem signature:
P1: DisplayFusion.exe
P2: 10.0.99.104
P3: 641de100
P4: d2d7
P5: 134217760
P6: explorer.exe
P7: 10.0.22621.1778
P8:
P9:
P10: "

I will test and let you know.
Just wondering, what should be the average CPU usage?

Update: Tested and looks like the issue is persisting...

Thanks for the update. The only setting I change is: Taskbar > Taskbar Mode > All taskbars show all windows.

Will test and update.

Update: Restarted after changing each System Hooks settings (Applications, Polling, and Shell)
Tested with all 3 hooks disabled: no issue.
Tested with Shell enabled: no issue.
Tested with Shell and Polling enabled: no issue.
With just the Application hook enabled: issue reoccurs.

I didn't test that but will test and update

Update: with hooks enabled but the DisplayFusion taskbar disabled there is no CPU issue

Thanks for the update.

Thanks for the update. Unfortunately, I do not have a multi-monitor setup currently. Once I do, I will test.