Do I need new CPU?

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lojzemahnic

Sep 1, 2018
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Hi all,

I'm getting this huge CPU usage spikes lately when browsing the web in latest addition of Windows 10. I have 10 yo 4 core Xeon E5450. It was working fine, but with spring and now autumn Windows upgrades, I get this spikes (99 % CPU usage) and micro stutters as a result. Do you think CPU is causing it? Thanks

spike.jpg

 
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It's basically everything new that I do. When I open Task manager, Windows Explorer window, MS Edge, Firefox, video with media player… It shoots CPU utilization to 99 % butt lasts only for a second or two and then falls back to sub 10 %.

Here is how opening Firefox with 5 homepage tabs looks like:
spike2.png
 
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The problem is it produces micro stuttering… Do you think it's CPU related? I didn't have this problem on the same system with windows 7 and earlier versions of Windows 10. It is happening since last two updates. PC is still usable as it recovers in a second or two, but it's really annoying. I'm using four 24" displays and gtx 1050ti, but as I said didn't have problems with system earlier so I doubt it's GPU related. 8 GB of ram is also enough for my work, hitting only around 60-70 % utilization. SSD is Samsung Evo 850 so it's fast enough not to cause any delays.

I would really like to know where problem lies. I don't want to buy new CPU+MB+RAM combo just to find out problem of micro stuttering isn't solved.
 
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Mouse pointer freezes for a second becoming unresponsive resulting in windows pip sound (sounds like when connecting new device) and then all goes back to normal. When playing game, control becomes unresponsive for a second or two (game goes to normal after stutter most of the time but sometimes crushes to desktop).
 
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Here is task manager when playing Subnautica. GPU gets 70 - 100 % utilization and CPU hits 99 % occasionally, but isn't hitting such high utilization constantly:

spike3.png


spike4.png


 
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I have updated to latest version of Windows 64-bit 10 PRO with autumn update (v. 1809 / installed on 3.10.2018 / OS build 17763.1)… Install assistant says I'm up to date.

Idle CPU utilization is between 3 - 15 % (averaging around 6 %)… Pretty much the same as in safe mode, maybe percent or two more cause of firewall and antivirus not running:

Idle normal mode:
spike6.png






 
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It's Bios is from 2003, so it's obvious MB won't have drivers for Windows 10. Going back to Windows 7 is not an option without paying for new licence. Is it possible to somehow undo Windows 10 autumn and spring update? System worked flawlessly before this years spring addition was installed.
 
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Under view update history, you should be able to uninstall updates.

 
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I can undo only latest autumn build through Settings > Update & security > Recovery > Go back to an earlier build. Is there any other option to undo spring addition too? Uninstalling only latest build doesn't solve the problem. I really don't want to do clean installation because of a licence problem plus afraid of loosing bank and government certificates. It's pain in the ass and expensive to get new ones as the current ones are non transferable.
 
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