Windows 10: Task Manager Memory Usage is Incorrect

Hello, The problem described below started two weeks ago after I had my laptop wiped and Windows 11 re-installed after it was hit with a virus. Task Manager always shows that I am using between 80% and 90% of memory.I have 8 GB 7.74 GB usable. This is what it says in Settings. This is what I purchased.When I add up all the tasks' memory usages, it comes to about 3 GB.I have done this calculation many times and always get the same results. My issue is that TASK MANAGER OR WINDOWS IS NOT RECOGNIZING ALL OF MY RAM. This causes performance problems describ

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Task manager not showing complete memory usage?


This has a couple of angles on this topic:
All Physical memory being used but nothing showing in task manager - Microsoft Community

Note the comment about data loaded into RAM- not necessarily exe's or dlls.

Suggest this view:



The top file is an O&O disk image file I've just created and written to an external USB.
The second is part of creating OO DiskImage's bootable CD

 

Task Manager Incorrect CPU Usage

So for roughly the past couple of weeks, I have been having issues with task manager giving me incorrect readings on the CPU usage. Before noticing this issue, I have been running my 9900K at 4.8 GHz all core with an AVX offset of 1. Initially, reducing
my clock speed by 100 MHz down to 4.7 GHz all core (AVX offset 0) solved the problem for a couple of weeks, but the problem has now resurfaced despite the CPU literally running at specified stock speeds.

The Task Manager program is incorrectly reporting CPU usage spiking up to 100% at times, sometimes accompanied by the display turning into a black screen for a half-second while playing SCP: Secret Laboratory. Meanwhile, other programs that were running
at the time such as Google Chrome or DIscord turn into black windows and require restarting. Other programs such as HWiNFO64, Corsair iCUE, and Process Explorer are reporting much lower CPU usage percentages.

Any ideas on what is causing Task Manager to behave like this? I thought Windows shipped out an update that fixed the broken Task Manager, but apparently not for me. I have already tried a clean installation of Windows 10 Pro to no avail.

CPU: i9-9900K @ 4.7 GHz all core

RAM: 4x8 GB @ 3200 MHz, XMP I

Motherboard: Asus ROG Maximus XI Formula, BIOS - American Megatrends Inc. 0905, 4/10/2019

Windows 10.0.17763 Pro Version 1809

OS Build 17763.437

Full Desktop Parts List: https://pcpartpicker.com/list/Cz87LJ





This was taken while running a game (SCP: Secret Laboratory, SCPSL.exe). Something seems off with the process explorer too since the game should be the highest in CPU usage, and the CPU use of the processes don't add up to 100%. I have seen this occur when
the computer freezes for a half-second for no apparent reason.





This was also taken while running the same game mentioned above, except this time only the Task Manager is reporting an incorrect CPU usage while Process Explorer says otherwise.





This image shows Task Manager claiming that the CPU frequency is being throttled to 3.6 GHz. CPU-Z is reporting a clock speed of about 4.7 GHz. Task Manager also seems to think CPUs #8 and #9 (starting from #0) are going crazy. I've checked both CPUs in
HWiNFO64 and Process Explorer and found nothing wrong with them.





This image is another example of incorrect CPU usage where the actual CPU usage is much less than 50%.

 

Why does the Windows 11 task manager not show the correct memory usage?

The question was already asked a bit differently in another thread, but the answer was not helpful.

Redirecting

Why does the task manager not show the real usage of RAM of the processes? If you add up everything that is listed in task manager you get less than 50% of main memory usage that is reported on the other tab of the task manager!

This is very unsatisfying, because it means you cannot determine what is actually causing the high memory usage.

It doesn't seem to be Windows System processes alone, but a certain overhead for every program.

If I close a task, that is reported to use 920 MB of memory and compare the overall RAM usage before and after, it drops by 1.7 GB, which is nearly double of the closed process, although on the processes list, this is the only task that disappears.

I'm using Windows 11 version 10.0.22621 Build 22621 on a Lenovo Laptop with ADM Ryzen 7 Pro 4750U and 32 GB of DDR4-3200.

Uploading images to this post doesn't work both in Firefox and Edge. It says: image inserted successfully, but no image visible.