Intermittent wireless mouse lag and performance drop

Hey everyone,


My Mac Pro is, every day, randomly starts showing nasty mouse lag and stuttering as the cursor moves. It's a Logitech MX Master connected using a Unify dongle. I have a litany of Bluetooth devices, but I normally don't have anything on and connected at one time other than the standard full size Apple keyboard and some kind of audio device (they're all Bose if it matters). The audio also starts stuttering, usually preceding the mouse issue by 10 or so seconds, but I could be just imagining that.


Tried everything I could find to no avail. Deleted devices and reconnected, removed Logitech Options and the Unifying software and reinstalled, removed anything in both system and user libraries with the word 'Logitech' in it, moved the Unify dongle to different ports away from the computer, in 2.0 hubs, 3.0 hubs, directly into the computer (which is inconvenient as ****), and even some basic OS maintenance. Next option is to move the MX Master to Bluetooth, though I'm concerned about having 3 (and occasionally 4 now I've bought a SoundTouch 10 for my office and want to output computer audio instead of using the horrible app - I think it's even worse than Sonos!).


Anyone have this problem or can advise? OS is latest release, everything is up to date, computer is otherwise running fine.




Mac Pro, macOS 10.14

Posted on May 4, 2019 7:07 AM

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Posted on May 4, 2019 10:27 AM

Major Issues:

Anything that appears on this list needs immediate attention.

More than one antivirus app - This machine has multiple antivirus apps installed.


Antivirus apps: CleanMyMac and Sophos


The correct number of aftermarket third-party add-on "protection" Apps is ZERO. Your Mac already protects itself extremely well from spontaneous attacks, and these third party add-ons do nothing good for you except ruin performance (may cause mouse lagging) and throw away parts of MacOS from time-to-time.

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May 4, 2019 10:27 AM in response to rayjayjohnson

Major Issues:

Anything that appears on this list needs immediate attention.

More than one antivirus app - This machine has multiple antivirus apps installed.


Antivirus apps: CleanMyMac and Sophos


The correct number of aftermarket third-party add-on "protection" Apps is ZERO. Your Mac already protects itself extremely well from spontaneous attacks, and these third party add-ons do nothing good for you except ruin performance (may cause mouse lagging) and throw away parts of MacOS from time-to-time.

May 17, 2019 5:13 AM in response to rayjayjohnson

Hi again, I've solved the problem so I should report back.


After all that it was something very simple. For some reason, and I'm sure there's a logical explanation, Logitech unify receivers don't play nice with Bluetooth and an office environment unless you have three different pieces of software installed.


For the record, when someone is frustratedly googling like I was, I'm using an MX Master and MX Ergo via the Unify dongle thing. You need logitech control centre and the unify software. it still messes up with just one or the other. And it has nothing to do with the options software.


Thanks for the help and general tips anyway, I've done all you've said and I'm hoping I'll get more out of the system. Really appreciate the time.


I'm glad I pay them so much money.

May 4, 2019 9:22 AM in response to rayjayjohnson

FWIW. I have the Logitech MX Master 2S mouse and did experience lag until I made sure the path between the Unity dongle and the mouse was clear of obstructions. I work from a heavy wood desk that was designed for computers that included a slide out drawer for the keyboard. You may find that just a small amount of repositioning may solve the lag issue for you as well.


As far as the other issues, I highly recommend that you run EtreCheck and post the report so that we can assist you with discovering any potential issues with your Mac.


Ref: Using EtreCheck to Troubleshoot Potential… - Apple Community

May 4, 2019 12:33 PM in response to rayjayjohnson

Regardless of what impressions you may have gotten about CleanMyMac, we get numerous posts here with folks asking on how they can get rid of it as it was causing them more issues than resolve them.


If you rely on Google sync as part of your overall backup strategy, then by all means, continue doing so. We are just letting you know that any form of backups to the Cloud will affect your Mac's performance when it is running. That's also true for Time Machine, but since it doesn't back up to the Cloud, it doesn't have as great an impact.


Same with Dropbox, If you need it, you need it. FWIW, I use Dropbox as well, but only for simple tasks and it works well for me for that reason.


Your latest report still shows Sophos and CleanMyMac as installed. Having Full Drive Access enabled, I now can see that the SoundTouch app is using a significant amount of CPU processing. You may want to consider removing this app if you don't really need it or make sure you have the very latest update that is designed to work with your Mac's version of macOS.

May 16, 2019 7:29 AM in response to rayjayjohnson

You need to take steps to get CleanMyMac off your computer. It is NOT benign.


You need to stop dropbox from running at all times. It is still loaded as a system extension and running constantly, chewing up Resources to synchronize your files. It has also caused a kernel panic recently.


Google Chrome has a reputation of being a slow buggy resource hog that uses far more system resources than is appropriate for what it gives you. Re-wrire of FireFox and recent changes to Safari make either a better choice. They are more stable, less resource-intensive, and faster than Chrome by a significant margin.


quartz and quartz are no longer being used by MacOS in Mojave. The entire graphics subsystem was re-written for Metal-2.

May 4, 2019 12:02 PM in response to Tesserax

I did not even read far enough to see you were doing cloud backup as well.


Third-party cloud backup pounds the stuffing out of your Mac. it needs to scan all the files on your backup, and all the files on your Mac. By the time it has finished (which could easily take four hours or more) so much time has gone by that it needs to do it all again. Using more than one of these can bring your Mac essentially to a halt.


This is mainly because they do not take advantage of a MacOS data structure called the File System Event Store, which is a finite list of recent folder changes. If current enough (within a few days) this data allows your Time Machine backup to determine what needs to be backed up in only a few minutes. If left for a week or more, it may take four hours to decide what to back up. Since time machine does not overlap these processes, that four hours is added to the total time to back up.

May 4, 2019 7:18 AM in response to rayjayjohnson

Oh, I should also add that while I am able to navigate to Finder and shut down or restart the computer, it tends to hang on the black screen with the spinning white thingamajig, and I'd say 80-90% of the time I have to force shut it down, and every time it tells me it didn't shut down properly when starting it up again, regardless of whether I force it down or it eventually does it itself.

May 4, 2019 4:16 PM in response to Tesserax

Hi Tesserax and Grant,


Firstly, thanks for your assistance and advice. It's really appreciated.


I've removed Sophos and disable google drive sync and will just open it when necessary, I don't use it much.


I'm trying to run another report with all apps closed while it's acting screwy like now, but the first one seemed to hang on checking software. Here's a video of the problem, I also get the occasional screen tear:

https://www.dropbox.com/s/kpag26jjd2trczg/Lag%20example.mov?dl=0


Forgot to remove team viewer, that's next, don't use it often enough. Also, mouse is connected via bluetooth right now, I removed the Unify dongle. This was when waking from sleep, which seems to be a catalyst somehow, but it's not 100% consistent. I'll keep trying to generate a new report.

May 16, 2019 5:11 AM in response to Grant Bennet-Alder

Hi, just an update, a week later and the problem persists. Seems very much to be when leaving the system for a long time (say, overnight). Essentially I can't let it sleep. I suppose powering down is fine, but for work I often need to leave the system overnight to process data. I've removed Sophos, though not CleanMyMac yet, as it's not been causing an issue prior.



The VTEncoder thing was a one-off I think, here's the current one:

May 16, 2019 8:22 AM in response to Grant Bennet-Alder

Thank you again for taking the time.


I’ll remove Clean My MAC first thing.


Regarding Dropbox, I should just set up a periodic sync? Or is that something I would need to do regularly? Dropbox is, unfortunately, the system I chose some time ago and I am kind of wedded to it now, as my lab (I’m in research) all use it because the University gave up and outsourced cloud storage to them. Consequently, it has millions of file in it from scientific equipment I HAVE to retain as is, per data retention policies. It’s not a great solution at all, but it’s the system I’m stuck with.


Browser-wise, I’ve always disliked the ‘feel’ of Safari, though I was a FireFox and ThunderBird user once upon a time... I’ll check that out tomorrow too.


X-Quartz was a recent addition I need to run an old version of ENVI+IDL to run an image processing algorithm for some large datasets we just produced. I’m planning on moving that to a central lab computer.


It’s got me so confused. I know my way around enough of a computer to do intermediate level things but not enough to fix real problems.


oh! I did replace the SSD maybe half a year ago? Actually, that might have been around the time the problem arose come to think of it. I’m not 100% certain though. Maybe 60:40 (apologies, my memory is tanked after some long nights).

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Intermittent wireless mouse lag and performance drop

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