Monterey DisplayLinkUserAgent high CPU with one app

[xavierr]

Hi fsantiago

Indeed, very similar problem.

A couple more things (some of which may be of interest to you):
- When I used the old version of the driver (v5.3.1 -- which stopped being supported on BigSur), I could connect all my monitors and I didn't experience the kernel_task high CPU usage
- However, with v5.3.1 my monitors didn't "stay in place" (I had to go in my MacOs Display Settings and readjust my monitors each time I restarted my Macbook).
- when I disconnect the DisplayLink docking station from my USB, it disconnects the external monitors that are plugging into it, but I continue to have the high CPU kernel_task issue when sharing my monitor in a Google Meet / Zoom call.
- the only way for me not to get the high CPU kernel_task grind to a halt issue is to Quit the display link driver completely.
- it has gotten to the point where I am no longer using my displaylink docking station at all. I have posted a 2 star review on amazon, which I should really downgrade to 1 star at this point, because the DisplayLink does not work as advertised on MacOS.

[fsantiago]

Alright folks, I managed to find a fix for the problem.

I don't know exactly why but it seems MacOs tries to do some processing with the image sent to the display that causes the high CPU usage etc.

In order to mitigate the issue, I had to select a "low resolution" mode. That means:

1. Access Display Manager
2. Select the display you want to set to "low resolution mode"
3. Set the resolution to "Scaled" while holding the option key in the keyboard. (That should list hidden resolution modes)
4. Select "Show all resolution modes"
4. Select the low resolution mode in the list, just like the image below.



Let me know if that works for you.

Cheers!

[paissad]

Hello @fsantiago

by "downgrading" the resolution, the CPU consumption reduced drastically, but it's such a pity !!!
Thanks for the tip !
Hope they will resolve this quickly and post the software update

Regards,