Lightroom 6.8: High CPU usage after certain period of time (Win 7)

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  • Updated 2 years ago
  • (Edited)
I had this problem before but never investigated it. Until yesterday. It took quite some time, but I got somewhere.

The problem:
Lightroom starts using excessive amounts of CPU after running for exactly two hours. And all of the time it was idle and minimized. I literally only started it, minimized it, and let it sit there.
After exactly two hours, Lightroom's CPU usage jumps from zero (correct) to 12,50% (this is on CPU with 4 cores, so the number is likely to vary system to system).

I am using Lightroom 6.8 on Windows 7 (x64).
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Jan Hříbal

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Posted 2 years ago

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Photo of Rikk Flohr

Rikk Flohr, Official Rep

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Jan, I ran your test on a Win 10 system with 8 cores.  

Closed all programs.
Launched Lightroom CC 2015.8
Launched Task Manager
Let sit for 2 hours.
Viewed Task Manager

Lightroom CPU usage floated between 0 and 0.7%