I will try and get every thing needed here .Version boinc_8.0.2_windows_x86_64 . , Running latest win 11 updates . Did this before latest updates though . Ok when I move boinc manager any where Like to taskbar or to hidden icons and even over to second monitor or change it to simple view . It more or less down clocks from like 60% of the cpu to 20% the 60% is 12 of 20 cores . I only see it mostly on real long WUs . I really can not leave the app. open on my desktop its kind of in the way . I tried hiding it behind programs on off screen same thing it down clocks cpu .Some times restarting it will put it back like it should be crunching but a lot of times I do a repair on it . I only notice it on long WUs like Genefer 21 from PrimGrid .. I will have to check if some of the longer ones from yoyo@home that show 50 to 60 days down clock to But i think thats a bug think they are done or error out in a day or so . . Because if I restart the client there gone . Just checked can hide it on main monitor behind like this page and can have it on simple view well sorta it still down clocks just not as much .

Have you tried to put it on an other (virtual) desktop?

No I have not and should not have to figure out how to do virtual desktop . The program should work with out doing any thing but installing it . Now not sure its not something with Win11 its buggy as all get up . I am pretty sure its not sending them to E cores because my CPU package TDP drops too along with the CPU Utilization . And E cores should still pull more then 35ish watts . I just opened a program that shows % of core usage I have 3 4 core genefer 21 WUs running right now I am showing all cores at 60% P-cores 59% E-cores 80% . Going to move Boinc Manager to second monitor , P-cores drop to 3.5% E-cores jump to 99% .and all cores drops to 22% . I used HWMonitor to check CPU % ,

In https://boinc.berkeley.edu/forum_thread.php?id=15398 we have someone with the same problem, and I feel like it's something caused by the CPU in combination with Windows. You both have the Intel hybrid-CPU with E- and P-cores, and this is not happening on "normal" CPUs with just cores (Intel and AMD).

In reply to Jord's message of 22 Dec 2024:

In https://boinc.berkeley.edu/forum_thread.php?id=15398 we have someone with the same problem, and I feel like it's something caused by the CPU in combination with Windows. You both have the Intel hybrid-CPU with E- and P-cores, and this is not happening on "normal" CPUs with just cores (Intel and AMD).

Think I mite know whats going on
The operating system, with the help of Intel’s Thread Director technology, identifies the nature of each task and assigns it to the appropriate core type .This is from this article .

https://computercity.com/hardware/processors/what-is-e-cores

So it looks like its both the CPU and win 11 not playing nice with Boinc WUs . But would be nice to find a fix because most intel's CPUs now have p-cores and E-cores . Looks like for some reason E-cores are getting assigned to the tasks when they should not . Way I think it should be is Boinc should use P-cores tell there all in uses then add E-cores . I have no idea how to make that happen its just my take on what I have found out . Not sure if changing some code in Boinc can fix it or if intel and Microsoft needs to fix it..
Edit
Found a work around not a fix . Need to run Boinc Manager in admin mode from this post .
https://learn.microsoft.com/en-us/answers/questions/1027852/windows-11-22h2-thread-director-issues-with-intel?page=2#answers

In reply to speedenbull's message of 22 Dec 2024:

Found a workaround not a fix . Need to run Boinc Manager in admin mode from this post .
https://learn.microsoft.com/en-us/answers/questions/1027852/windows-11-22h2-thread-director-issues-with-intel?page=2#answers

But here's the thing, BOINC Manager only shows the output of the client, BOINC.exe
It's just a GUI, a graphical user interface, it doesn't do anything with regard to the tasks running. Those tasks run on science programs made by the projects, which are started and stopped by the BOINC client.

So, while I agree that it's a funky thing where the E-cores are being used while they shouldn't, it shouldn't have any impact with running BOINC Manager on the desktop, or minimized.

I'll try to get the developer over to this thread as well as the other.

Worth a read of https://github.com/BOINC/boinc/issues/4663 in the meantime.

In reply to Jord's message of 22 Dec 2024:

In reply to speedenbull's message of 22 Dec 2024:

Found a workaround not a fix . Need to run Boinc Manager in admin mode from this post .
https://learn.microsoft.com/en-us/answers/questions/1027852/windows-11-22h2-thread-director-issues-with-intel?page=2#answers

But here's the thing, BOINC Manager only shows the output of the client, BOINC.exe
It's just a GUI, a graphical user interface, it doesn't do anything with regard to the tasks running. Those tasks run on science programs made by the projects, which are started and stopped by the BOINC client.

So, while I agree that it's a funky thing where the E-cores are being used while they shouldn't, it shouldn't have any impact with running BOINC Manager on the desktop, or minimized.

I'll try to get the developer over to this thread as well as the other.

Its how Windows sees Boinc . When its open on the desktop it runs it as any other app . but once you send it to task bar or hidden icons it sees it as a background app . Now I do not know what the difference is . Not sure how running it as admin works but from the time I started doing that it has run like it should , P-core then E-cores after P-cores are used up .

Richard Haselgrove
That was a good read even though I do not know what there fix for it was or if they had one . Not sure how to do this ( set windows to favor background tasks ) I looked it up my computer is set like its shown . .