CPU work load stalling every few seconds.

Since a day or 2 the work load on my CPU keeps bouncing from 10% up to 100%. 8 seconds of 100%, 1 or 2 seconds down to 10%, repeat.
It used to just stick to 100% as I configured it to 95%, the rest is probably taken up by windows/applications.

I'm wondering what could be causing this, and how I can prevent it from behaving this way.

Current settings:
- don't interrupt work when computer is in use (for both CPU and GPU)
- interrupt work when CPU usage higher than: --- (set to 0 for no limitation)
- use all 4 processors
- use 95% of CPU time

It's still getting work done, the problem is that the CPU fan keeps throttling up and down with the CPU load, which gets kind of annoying and might be reducing it's life.
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Since a day or 2 the work load on my CPU keeps bouncing from 10% up to 100%. 8 seconds of 100%, 1 or 2 seconds down to 10%, repeat.
It used to just stick to 100% as I configured it to 95%, the rest is probably taken up by windows/applications.

I'm wondering what could be causing this, and how I can prevent it from behaving this way.

Current settings:
- don't interrupt work when computer is in use (for both CPU and GPU)
- interrupt work when CPU usage higher than: --- (set to 0 for no limitation)
- use all 4 processors
- use 95% of CPU time

It's still getting work done, the problem is that the CPU fan keeps throttling up and down with the CPU load, which gets kind of annoying and might be reducing it's life.

Interesting, I never changed that setting, and it never did that before! All I did in the last few days was install a new video card.

I set it to 100% now, and will check how it performs.

I thought it didn't work too well with taking over the settings from the website. Not even when manually updating the project. Often the job cache was nowhere near what I configured either. And today it still isn't by the way. I set it to minimum of 3 days, and an additional 3 days, but it only has work for the next 17 hours, with a total of 20,5 hours of work.
____________

Interesting, I never changed that setting, and it never did that before! All I did in the last few days was install a new video card.

I set it to 100% now, and will check how it performs.

I thought it didn't work too well with taking over the settings from the website. Not even when manually updating the project.

Often the job cache was nowhere near what I configured either. And today it still isn't by the way. I set it to minimum of 3 days, and an additional 3 days, but it only has work for the next 17 hours, with a total of 20,5 hours of work.