https://www.displayfusion.com/Discussions/RSS/?TopicID=86d90bbe-460c-44da-a08c-f67a76c404ab DisplayFusion RSS: Very Poor Performance, High CPU, System sluggish Sun, 19 Apr 2026 13:01:13 GMT en hourly 1 https://www.displayfusion.com/Discussions/RSS/?TopicID=86d90bbe-460c-44da-a08c-f67a76c404ab https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#33 Fri, 10 Apr 2020 00:50:22 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#33 DisplayFusion @KevFrey: When this happens, if you disable the monitors that are connected to the USB dock, does it make any difference on DisplayFusion's CPU usage? ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#32 Thu, 09 Apr 2020 23:46:03 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#32 DisplayFusion I too am having this issue, and have had it for several years (paying customer)., across Win7 and Win10. The same symptoms for me - after running a few days, CPU starts creeping up, at some points burning up to 30%... however, the entire system is much more sluggish than just 30%, so there must be some kind of dramatic rate of task/thread switching happening somewhere, or a driver interaction throwing fits.

My setup is an Anker USB dock (displaylink standard).
When this is happening, it is jacking up WUDFHost.exe.
My belief is that this issue has to do with user-mode driver interaction for certain USB docking stations. The "virtual display card" that the USB dock represents might have something to do with the behavior.

My PC: Lenovo P50, 32GB ram, NVIDIA Quadro M2000M (4GB ram - but I don't think the Nvidia is in the mix here), USB DisplayLink USB device (Anker USB dock), dual 24 Asus PA-248Q monitors, one driven by DVI, the other driven by HDMI - both are plugged into the Anker USB Dock.
Windows 10 build 18362.19h1 / 190318-1202 (but I don't think Windows OS v matters, since this issue has persisted across multiple clean builds of Win7 and Win10).

FYI and I hope that helps with any troubleshooting or root cause analysis you can pursue. ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#31 Thu, 10 Mar 2016 21:18:01 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#31 DisplayFusion Sorry for the delay! Responded to your email just now, requesting a debug log. We'll troubleshoot via the email chain and I'll post an update here if it applies to others. ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#30 Sun, 06 Mar 2016 22:47:40 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#30 DisplayFusion Hello,

Having the issue with high CPU usage 17% and above, and having now updated to the latest beta version you have on your website, I still have the issue. Once I turn DF off, my system goes back to normal. I too am getting to the point where I will have to uninstall DF. I love its features, but at the cost of such a high CPU usage it negates its benefits.

So to help you debug this once and for all, how can I help, to help your tech's out?

Regards,
Ron ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#29 Tue, 02 Feb 2016 14:12:46 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#29 DisplayFusion That's correct, I left the button part of the text out by accident

This is just for troubleshooting, and it will disable the green highlight that shows up on taskbar buttons for programs that are doing stuff, like a file copy, or a download. This option will only affect the DisplayFusion taskbars, and not the Windows taskbar on the primary monitor.

Thanks! ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#28 Tue, 02 Feb 2016 05:28:16 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#28 DisplayFusion Hi Keith,

Did you mean we should enable the setting for "Disable Taskbar BUTTON Progress Overlays"? I do not see just a "disable taskbar progress overlays" so I want to confirm.

Also, can I ask what exactly are the "taskbar buttons progress overlays"? (assuming this is what you meant)

Is this strictly for troubleshooting purposes and is this something one would really want to leave enabled under normal circumstances?

Thanks!

Collin ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#27 Fri, 29 Jan 2016 19:52:07 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#27 DisplayFusion Can you guys try updating to 8.0 Beta 3, and enabling the "Disable Taskbar Progress Overlay" option in the Settings > Advanced Settings window? You'll need to restart your machine after enabling that setting. Please let me know if that helps with the CPU usage at all. ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#26 Fri, 13 Nov 2015 14:22:20 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#26 DisplayFusion I'll do some testing with these apps here to see what I can find out, thanks! ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#25 Tue, 10 Nov 2015 04:35:00 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#25 DisplayFusion Hi Keith, I'll also post a separate thread but I'm on the latest beta 8 and it's now to the point where DF is pegging CPU on more and more apps which I then must exclude, and now is almost tipping the scale of the primary apps all being excluded from DF making me wonder why I am running it anymore.

For me, a common app like MPC-HC media player which never had this much issue before now also is fine only once I set it to a full "7" compatibility meaning fully exclude. I bet this thread creator just has some apps also like this.

Here is a list of all the apps I must excluded just on this one PC otherwise DF makes the machine unusable and kills CPU:

VMware multiple windows/apps
Onenote
Crashplan
Teracopy
MPC-HC

I believe my other desktop machine has a longer list but wanted to add I just noticed my laptop being absolutely killed by DF and low and behold after tkttaking the time to trial and error, turns out MPC-HC media player being hooked causes latest beta DF to spike the CPU, like Crashplan, teracopy, vmware, and the others in my list.

I hope you can fix this, if I exclude much more commonly used apps, I may as well just kill DF as it's the DF buttons to swap monitors, etc on these very apps that I really want to use it for! Let me know if I can help troubleshoot more.

Thanks! ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#24 Thu, 21 May 2015 18:33:50 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#24 DisplayFusion Thanks for the heads-up.

I will get and install it. I was running Beta 5, and it seems to be working so far.

Cheers ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#23 Thu, 21 May 2015 17:13:15 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#23 DisplayFusion Just wanted to follow-up with you guys to see how the latest 7.2 Beta (Beta 7) is working out. Please let me know if you're still having any trouble with the CPU usage ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#22 Thu, 14 May 2015 02:43:17 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#22 DisplayFusion In looking for common "threads" (haha) I run Chrome as well. One or two windows with 8 to 15 tabs total. ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#21 Thu, 14 May 2015 02:38:36 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#21 DisplayFusion I too run Virtual Box, but I haven't noticed it causing any issues directly related to Display Fusion. It usually runs on monitor 1. It is CPU heavy (no surprise) and I notice issues when it gets into contention with Display Fusion for CPU cycles. However, I don't think it is part of the problem.

-Paul D. ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#20 Thu, 14 May 2015 02:35:56 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#20 DisplayFusion Hello Keith,

I have beta 5 installed and so far, so good. My problem is a little different than Mikes, as mine takes a few days to a week to manifest. After some investigation, Google Chrome may be involved somehow. I run many, many tabs for research. Typically, I run 3 Chrome windows with ~ 15 tabs each on monitor 2. Some of the pages are flash heavy, and they chew up CPU, which is usually when I begin to notice trouble. I've tried the compatibility tab under the Display Fusion configuration and disabled the hooks and menus for Chrome, which seems to have helped a little.

Any suggestions? ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#19 Wed, 13 May 2015 22:40:29 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#19 DisplayFusion Another data point. I was actually at my computer most of the day today and kept the task manager open the whole time. DF has been slowly, linearly, climbing in CPU use throughout the day. Since my morning reboot it now bounces to 12-13% (refresh on task manager: 0/1/10/0/0/13/0/3/12 etc). So it is definitely something getting worse over time. But it also doesn't get fixed by reloading DF - only a reboot clears it.

I still haven't installed the beta. Will do so tomorrow. ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#18 Wed, 13 May 2015 18:35:57 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#18 DisplayFusion Ok, yeah, VirtualBox shouldn't be an issue, I run it here as well. Would you be able to try 7.2 Beta 6 when it's available (hopefully by the end of next week)? We've resolved an issue that can cause DF to hang for Beta 6, just wondering if it might also be related to the CPU running away as well. ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#17 Wed, 13 May 2015 15:51:03 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#17 DisplayFusion Happened overnight while computer was idle.

Watching the task manager right now. It's now fluctuating from 0 to 2 percent, and the memory is bounding between 75 and 81M every few seconds.

The only new piece of software I'm running is VirtualBox, but it has been up and running as I've had this issue. ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#16 Wed, 13 May 2015 14:59:45 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#16 DisplayFusion Ok, thanks! I've got a Win 7 machine here that I leave running 24x7 and have never run into this, so there must be something else that's contributing to this. Does it seem to happen while the computer is sitting idle, or does it only show up while you're using it? ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#15 Wed, 13 May 2015 13:54:10 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#15 DisplayFusion Looks like about a day. If you can see the date/timestamp on my post above about rebooting (it only says "one day ago" to me) that was my last reboot, then the issue appeared this morning.

It also doesn't appear to be a sliding scale. I think the issue simply triggers and goes from zero CPU usage to maxing out a core. I'll watch for that as well. ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#14 Wed, 13 May 2015 13:45:41 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#14 DisplayFusion The beta is pretty stable, I run it all day every day

How long does it usually take after a reboot before the performance is terrible? ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#13 Wed, 13 May 2015 13:05:37 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#13 DisplayFusion If there's a trigger, so far, the only one I've found is "time without reboot".

I must have updated to a newer version recently because I see that DF is back in its default place in my start bar. This tells me the issue was introduced with an update. Is there a log file where I can check when I last upgraded? Can I go back to a previous version?

I haven't yet tried the Beta. How stable is it? I don't fancy things getting worse! ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#12 Tue, 12 May 2015 19:02:46 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#12 DisplayFusion @Mike: Sounds good, if we can find a good way to reproduce this here, it would be much easier to track down. If you could also upgrade to 7.2 Beta 5, that would be great.

@Paul: Please let me know how it works out with Beta 5. Is your case like Mike's, where a reboot fixes it for a while? ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#11 Mon, 11 May 2015 21:39:44 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#11 DisplayFusion I should mention that rebooting clears this up for me. I'll be watching to see if I can spot the trigger.

Mike ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#10 Mon, 11 May 2015 20:33:35 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#10 DisplayFusion I think I have this issue as well. My CPU is sitting at 13% for DisplayFusion, but I think that's it's basically maximizing one of my 8 cores. I really see the problem when I click on a program in the task bar or try and bring up Display Fusion's settings. For example, right-clicking the DF taskbar icon takes 3 to 5 seconds to respond. The settings window took three minutes to appear, and clicking tabs within the settings window all took quite a long time to respond (a minute or more each time).

Clicking on programs in the taskbar of my main monitor does not result in the delay.

Logs and troubleshooting info attached. Note that while it is showing a lot of CPU use for the Settings Window, that's because once I open it, Settings becomes the CPU "capture" for the spike. When the settings window is closed, all CPU is being spent on DisplayFusion.exe.

El Tea ]]> https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#9 Mon, 11 May 2015 19:57:40 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/very-poor-performance-high-cpu-system-sluggish/?ID=86d90bbe-460c-44da-a08c-f67a76c404ab#9 DisplayFusion Hello Keith,

I think I have a good reproduce of this issue. This is with 7.2.0 Beta 3. I'm upgrading to 7.2.0 Beta 5

Please see attached.

The first is the support output.
The second is a mini-dump and screenshot from Windows for the process. The Thread that is of particular interest is TID 6836 This is the one that is usually clocking about 35+ CPU %.

Thanks in advance!

-Paul D. ]]>