Windows 10: PC starts to lag after running for 2h

I've had this problem for a while now. Once my PC has been running a few hours it becomes laggy. This affects games, file explorer, chrome...everything. If I reboot the PC it runs fine again for an hour or so. The longer the PC runs the worse and frequent these lags get. After trying to find out what the problem is I gave up and build a new PC a week ago. It was about time anyways. I switched out CPU, Mobo, Ram, NVME SSD and Case. The GPU, PSU and SSD are still from the "old" PC. I did a fresh install of WIN10 and updated all drivers and the BIOS. The Problem still shows up

The current build is as follows:
Ryzen 9 3900X

G.Skill 32 GB 4DDR RAM

Gigabyte X570 AORUS Elite Motherboard

RTX 2080ti

2tb Samsung NVME SSD and a regular 500GB Samsung SSD

Corsair AX860 PSU

I switched out the GPU for a GTX980ti to see if thats the issue but it still happens

I benchmarked the SSDs once the lag got really bad and the read/write is still fine and shows no difference to when the PC just booted

I checked temps. and all is fine

Taskmanager shows that RAM usage and everything else is on the low end/nothing special

At this point Im not sure if its a Software or Hardware issue. Or something External like the USB DAC or one of the two screens . I read that it might be an Indexing issue and switched that off for all hard drives to no avail

Anybody have an idea or a suggestion?

:)

 

Random lag spikes

Hi,

We would like to know more about your lag issue:

• What browser are you using when you experience a lag?
• Does the lag occur in a particular game?

In the meantime, we suggest you run the System Maintenance troubleshooter. Here are the steps:

• Press Windows Key + X.
• Click on Control Panel.
• Select Troubleshooting.
• On the left pane, click on View All.
• Click on System Maintenance to run the troubleshooter.

Looking forward to your response.

 

Windows 10 lags

Hi,



Thank you for writing to Microsoft Community Forums.



We understand how difficult it is when the PC doesn’t perform the way it should be. We were checking the lag issue, but
in order to get clarity and to assist you accordingly, please reply with the answers to the questions below.

• What is the Windows 10 version and Build installed? (Type
  winver in Windows search/Run command)
  
• How much is the CPU and Disk usage showing in Task Manager, also check if any particular program is having high CPU and Disk usage?

We would suggest you to refer the steps as suggested in this article (Exclude step 10):
Tips to improve PC performance in Windows 10



Meanwhile, put the PC in Clean Boot and see if you still get the PC lagging issue. Refer the article

How to perform a clean boot in Windows. A ‘clean boot’ starts Windows with a minimal set of drivers and startup programs. If the settings app is working fine in Clean Boot then please refer the section
How to determine what is causing the problem after you do a clean boot
to determine the root cause of the issue.



Note: After you finish troubleshooting, follow the section
Reset the computer to start normally after clean boot troubleshooting
to reset the computer to start normally.



Regards,



Aditya Roy

Microsoft Community – Moderator

 

Windows 10 Suddenly Starts to Lag

Hello,

For us to better assist you, we'd like to know the following:

• Confirm which build is currently installed on your device. To check, follow the steps below:

• Press Windows key + R, then type in winver.
• Click OK.

• Were there any recent changes made prior to this issue?
• Are you using any 3rd party antivirus program?

Meanwhile, we suggest performing the suggested steps on this article
on how to improve the performance of your Windows 10 device.

We look forward to your response.

Regards.