Hey.
I have the same issue.

Win 10, geforce 1060, AMD Ryzen 9 3950X, 64GB RAM.
My CPU load is 15-20%.

It's OK after disable taskbar on all monitors (I work on 4) it's a bit better. No lags while switching windows / apps. With taskbar ON there is a noticeable, annoying lag while switching windows.

Downgraded to DF 9.7.1 Beta 6 nothing changed.

I use beta because of the issue with Edge Browser (this beta fixes that).
For some time it was working just fine ... and for a couple of days now it's bad.

Don't know why. I have upgraded to Beta 10 and probably had some windows updates. No more changes.

I didn't reboot after downgrading to Beta 6 from Beta 10.
Is this necessary?

I attache my debug diary.
Hope it will help. My windows default language is Polish.

Thanks in advance.
Regards,
Damian

• Attachment [protected]: debug.txt [179,286 bytes]

24 days ago  • #2

Same issue here! I've updated to latest beta version and I'm still seeing 40% cpu usage by display fusion. I'm running latest version of windows 10 pro on an Alienware with I7 processor and 32gb of ram. I have to shut down DF to keep my cpu from maxing out while other processes are running!

22 days ago (modified 22 days ago)  • #3

Time for me to chime in on this one too. DF running 30-70% CPU.
DF Pro 9.7.1
Windows 10 20H2 (19042.685)

• Attachment [protected]: DisplayFusionDebugInfo.zip [167,506 bytes]

21 days ago  • #4

As I see last stable version doesn't solve our issue ...

20 days ago  • #5

This latest stable version seems to have resolved my issue. DF is only using about 2% of my CPU even with multiple task bars enabled.

20 days ago  • #6

For those still having this issue with 9.7.1, does the high CPU usage start immediately after a fresh reboot, or only after DisplayFusion has been running for a while?

20 days ago  • #7

Occurs immediately.

20 days ago  • #8

Unfortunately with the 50 MB limit, can't upload the dump file.

20 days ago  • #9

Mine has been OK since rebooting approx 1 day, 15 hours ago, and updated to 9.7.1 release yesterday as well. Current CPU between 2 and 3%. I'll report if it spikes again.

Win10 1909

___
Cheers,
David

20 days ago  • #10

I tried latest 9.7.1 ... no difference
CPU usage 15-25% right on DF start.
DF off CPU usage 3-5%.

20 days ago  • #11

CPU is back to fluctating between 12-36% (mostly right around 20, but it's bouncing up and down).

Really not good.

___
Cheers,
David

19 days ago  • #12

Seeing the same type of issues. Debug info from L2 log attached. Give me an FTP and I can send you a dump as well I had windows create.

• Attachment [protected]: DisplayFusionDebugInfo.zip [429,843 bytes]

19 days ago  • #13

Hi,

Same problem here. Usage >40%, starts immediately. Using DF Pro on Steam 9.7.1, Windows 10 Pro 1909 (10.0.18363).
DF used to manage the real estate on one ultrawide (5120,1440) monitor. I do NOT use DF for wallpaper management, or multiple monitors.
Logs available upon request.

19 days ago  • #14

Kevin - please advise on the best/easiest solution to this issue (i.e. what version is best to downgrade to, and where to get the install file). I've now also got my windows hiding behind the multi-monitor task bar (i.e. the windows maximize to the monitor, not the task bar). Leaving us all to run on 9.7.1 with this issue is unfair. I expect to be having clients with issues in the new year as they complain about performance too.

___
Cheers,
David

18 days ago  • #15

After a few days on 9.7.1 my DF cpu usage remains at around 2% with multiple task bars fully enabled. Just to be clear, that is not total CPU usage, just what is being consumed by DF. I'm hosting a camera security system on this machine that uses around 40% of my CPU so when my total usage skyrocketed to 80-100% I discovered that the culprit was DF. Looks like I'm the lucky one so far with this version solving my problem.

18 days ago  • #16

Could anyone still having this issue please do the following?

• When the CPU usage is high, open the Windows Task Manager, click the processes tab, then right-click DisplayFusion.exe and choose "Create Dump File"
• Zip the dump file
• Send us the dump file via this page: https://www.binaryfortress.com/Data/Upload/
• Reply to let us know the file has been uploaded

If you want to roll back to 9.7 after that, you can download it here: https://www.binaryfortress.com/Data/Download/?OldVersion=1&DownloadID=34204533-0a63-442a-84af-63025d8cabdd

Thanks!

18 days ago  • #17

Uploaded

18 days ago  • #18

I upload two dump files. One from yesterday and one from today. I already tried to uninstall and reinstall. I tried older 9.7 and 9.6.1c as well and nothing worked. I restored setting before the dump today from when the system did not have the issue.

18 days ago  • #19

Hello,

Windows 10 Pro 20H2 (Build 19042.685)

Intel i7-7700K
ZOTAC GeForce GTX 1070 AMP! Edition 8GB GDDR5
(latest nv drivers & system up to date)

Same issue (2xLG 27GL63T) using DisplayPort.
CPU Load: 40%-90%

Uploaded: 9.7 / 9.7.1 Dump
Affected version(s): 9.7 Pro & 9.7.1 Pro.

Cheers.

• Attachment: displayfusion_9.7.1.png [3,223 bytes]

17 days ago (modified 17 days ago)  • #20

9.7.1 dump file uploading. CPU averaging around 20%. Definitely jumps when moving windows between monitors.

___
Cheers,
David

17 days ago  • #21

Upload failed (site 'down for maintenance').

___
Cheers,
David

17 days ago  • #22

I uploaded 9.7.1 DUMP no upload fail.
File uploaded successfully!

17 days ago  • #23

Hello,

I found the problem, in my case it was "Acronis Protection" after disable the protection, DF is now using 1-3%.

I keep you updated.

Kind regards.

12 days ago  • #24

Re: switching off Acronis Protection. Doesn't work for me. I followed this process:
reboot PC with DF and Acronis Protection (AP) running - High DF cpu
turn off AP - no change to high DF cpu
reboot, leaving DF on, AP off - still high DF cpu.

Latest version of DF, Acronis True Image 2021, up to date.

12 days ago  • #25

We think we have a lead on this issue. Could you try out this build and let me know how it goes?

https://www.binaryfortress.com/Files/DisplayFusion/DisplayFusionSetup-9.7.1-TEST2b.exe

12 days ago  • #26

Still 30-40%. Creating dump file now. Uploaded successfully.

12 days ago (modified 12 days ago)  • #27

@JonathanC: Any chance you're running Acronis as well?

11 days ago  • #28

Yes, Running Acronis TrueImage 2021
Also TrendMicro Maximum Security 2021

11 days ago  • #29

Hi, downloaded and installed the test release. Better, but not there yet. Went from consistently north of 40% usage to around 15-22% (both immediately upon installation, and following a reboot).
This is an instant feedback, I'll leave running over night to see if % changes.
I did NOT uninstall the old version. The decrease in % would indicate that I am definitely running the test version. However, is there a way to check (about screen just says 9.7.1).
I am still running True Image 2021 with protection switched on.

11 days ago  • #30

I did send in a ticket to Acronis TI Support but they appear to be MIA as far as responding goes.

11 days ago  • #31

I also have had this problem for several days. CPU usage 20 - 40% constantly.

Windows 10 Pro 64 20H2 19042.685
Windows Feature Experience Pack 120.2212.551.0

DisplayFusion Pro 9.7.1
Windows 10 Pro 2009 (10.0.19042)

PC is i7 32Gb RAM
NVIDIA GeForce GTX 1080 Ti 11Gb RAM feeding 3 screens.

Computer is unusable for AutoCAD 2021 when DisplayFusion is running so have disabled DF for now.

Also running Acronis True Image 2021 build 35860.

Peter.

11 days ago (modified 11 days ago)  • #32

Hi, overnight the test build has crept up from 15-22% range to 20-32% range.

11 days ago  • #33

I also have Acronic True Image installed if this is a clue.
And to bo honest during my investigation I also had a clue that Acronis is possible interaction software in this issue.

Hope you will be able to fix it.

@cbeckmann try Acronis live chat ... I naver had a problem to contact them.

10 days ago (modified 10 days ago)  • #34

I too was running Acronis protection when I first became concerned by the high cpu usage on my system. It was one of the first things I turned off to reduce the load. Turning it off did not resolve my high CPU usage issue with DF. Once I installed the latest version of DF its CPU usage went back to around 2% consistently. This morning I reactivated Acronis protection, updated it, ran a san, and let it settle in. DF is still using about 2% of my CPU.

10 days ago  • #35

Test build installed. CPU was previously jumping to ~15% consistently, and now hovering between 5 and 10%. Expect this will creep back up over time (which seems to be the pattern).

Not running anything Acronis.

Bitdefender is on my system (MSP version with firewall component disabled). Excluded the C:\Program Files (x86)\DisplayFusion folder from scanning, and no difference.

___
Cheers,
David

10 days ago  • #36

Fixed my issue. Great job! Now Display Fusion is using essentially no CPU!

10 days ago  • #37

@DigiVie: BitDefender has an extra place for exceptions, in the "Advanced Threat Defence" feature. Can you try adding it there as well?

For those running Acronis, I seem to have narrowed it down to the "Behaviour engine" part of the antivirus. If I disable that feature in Acronis, then the DF CPU usage is totally normal (~2%). We're going to see if there's something in DF that's conflicting with that feature in Acronis.

7 days ago  • #38

Hi Keith - no difference when disabling 'Advanced Threat Control'.

Definitely better with the latest version though. Now hovering between ~5 and 11%.

___
Cheers,
David

7 days ago  • #39

Upgraded to 9.7.2 Beta 2. Still hovering around 10% (4x Dell U2415 monitors, if that is important).

___
Cheers,
David

5 days ago  • #40

Any word around this with Acronis True Image and the ransomware scanner there?

5 days ago  • #41

I've reached out to Acronis tech support but they're asking me for a lot of information from the customers affected by this. I think that for those running Acronis it may be better to open a support case with them directly so that you can send them the info they need from your systems. I will send them what I do know as well and hopefully if enough people report it they will look into it further

4 days ago  • #42

Uploading dump file. Zipped it first (134M instead of 46.

___
Cheers,
David

4 days ago  • #43

@DigiVie: Thanks! We'll check it out and see if we can spot anything.

3 days ago  • #44