Shell Infrastructure Host high CPU usage (Windows 11)

Hey, this is my first post and I hope I get a support.

A clean Windows 11 installation on Lenovo ThinkPad-P72, installed all the updates provided by Windows Update, when splitting the file explorer in two windows and starts copying pictures from a window to the other one, the Shell Infrastructure Host (sihost.exe) kicks in and stays on 16% CPU with high fan speed and If I continue working on the same task the PC gets stuck and I have to restart it to resume. I don't have this issue on my ThinkPad-P71.

Create another user account to find out if the high CPU usage by sihost.exe.

Ensure your PC is up to date.

It’s safe to run sihost.exe if it’s in the C: Windows\System32 folder.
If you locate sihost.exe in a different location (such as a subdirectory of Program Files), delete it right away.

Malware on your computer can cause a slew of issues, so take the methods below to scan your machine for viruses.

Open Command Prompt and execute bellow commands one at a time:

I'm also experiencing this from time to time. I regularly run SFC and DISM checks. What could the issue be?

I think there is bug with the Photos app in Win 11. I notice the high CPU on sihost.exe starts when using the photos app as well.

FreeBooter said:

What Is the Shell Infrastructure Host Process and Is It Safe?

The Windows operating system is built on a collection of hundreds of different system processes, each having a specific purpose. For instance, some parts of the Windows interface are generated [...]

helpdeskgeek.com

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I'm almost certain it's the Microsoft Photos app...

Same here! But the "funny" thing is that my son, that's got an identical rig, the same programs plus a ton of gaming and cad programs doesn't have this problem!

PelleChevelle said:

Same here! But the "funny" thing is that my son, that's got an identical rig, the same programs plus a ton of gaming and cad programs doesn't have this problem!

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Is the Photos app the culprit on your machine? I'm surprised if this hadn't been fixed by now.

Kol12 said:

Is the Photos app the culprit on your machine? I'm surprised if this hadn't been fixed by now.

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Yes it is! At least it's part of the problem. I un-installed Photos and the problem is gone. But how come my son don't get the same problem? The difference between us is that he doesn't use One drive. I'll investigate that eventuality later. Maybe one of his gaming installs "solves" the problem?

PelleChevelle said:

Yes it is! At least it's part of the problem. I un-installed Photos and the problem is gone. But how come my son don't get the same problem? The difference between us is that he doesn't use One drive. I'll investigate that eventuality later. Maybe one of his gaming installs "solves" the problem?

Click to expand...

...and we got the same version of Windows 11

This is odd and by god I hope I'm wrong?
I've been opening tons of image files now without triggering the SIhost. But as soon as I opened a file that can be labeled "adult", the SIhost kicks in and spikes at approx 10% and stays there. I've done this test over and over, and the result is persistent. Can someone please confirm or dismiss? Does certain images have hidden tags that starts some processes or what?