Weird one. Workstation dropping to a crawl with very little running. Not overheating, No big load.

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RimBlock

Active Member
Sep 18, 2011
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Singapore
Hi all,

I have a PC built around a ASUS WS790-ACE MB, an Intel w5-2455 CPU, 64GB Ram (6000MHz), various NVME drives (via onboard controller) and a RTX4070-Ti.

It generally runs fine but now and then (once a week or after 2 days etc), it will bog down and run at a speed where it takes 5-10 seconds to accept a click and open a window. During this time the mouse movement is normal. Everything is extremely slow.

Checked temps (case has 8 fans, 2x bottom, 3x side, 3x top with rad for AIO CPU cooler)... CPU / GPU Ram all under 45 DegC. Checked GPU load via task manager which showed 16%, ram usage at 36% and pretty much noting on the NVME / GPU. Network is running at 1GB/s but it is a 10G onboard (Marvell) NIC and my network is 10G.

The only thing running quite hot is the PCH at 70+ DegC.

The Windows event viewer logs shows nothing around the slowdown time (warning / critical).

The issue has not occurred whilst running games.

One resolution (temp fix) is to logout (which is painful due to the very slow responsiveness of any inputs) and login again. Everything is back to normal until the next slowdown. As soon as I logout the machine is instantly back to normal for logging in.

The logout and in again seems to indicate a process causing a issue. It has been a while so I freshly installed Windows 11 Pro again last night and today the problem resurfaced again.

If I leave the machine for a period of time it seems to come back to normal state again but sometimes goes back to slowdown mode later.

At a bit of a loss.

Any suggestions ?.
 

i386

Well-Known Member
Mar 18, 2016
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Germany
Do you have the Epic Game Launcher (or unity stuff from visual Studio) installed by any Chance?
 

RimBlock

Active Member
Sep 18, 2011
872
31
28
Singapore
Thanks for replying.

Previously yes, after the rebuild no.

Got hit again with the slowdown. Grabbed some screenshots with stats.

hwinfo.png

taskmanager.png

The network is 10% (its 10G) but it's worth noting that the program using the nic was running for 2 1/2 hours and the system went back to normal for some time during this programs run.

The last slowdown happened when I was running YouTube shorts in the background (via Brave Browser). Whilst the video from the shorts turned in to a slide show, the audio was fine and the scroll wheel on the mouse jogged the video to the next one with no delay (video took time to catchup but audio switched straight away).

Just on a hunch, I have now installed an Intel X520-DA1 NIC (Intel 26.7x64 driver and proset) and disabled the Marvell and Intel I-226-LM NICs. Will see if that helps.
 

TrashMaster

Active Member
Sep 8, 2024
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Are you running VROC at all? I had weird problems that turned out to be PCIE AER causing massive slow-downs doing storage access that windows was oblivious to. Unfortunately these days you almost always need an honest operating system to figure out weird hardware problems on complex platforms.
 

RimBlock

Active Member
Sep 18, 2011
872
31
28
Singapore
Thanks for the reply.

No VROC. The SATA controller is disabled in BIOS as I am only using NVME drives. No VROC Intel drives are loaded.