I am running Lightroom CC 2015.8. Out of nowhere, when I go into the develop module, the CPU usage is spiking to over 300% and editing basically becomes too slow to do anything. I do not know what happened, this seems to have happened randomly. I have restarted my machine and CPU continues to spike.
Does anybody have any idea what could have caused this?
If you are performing a lot of brushing and/or spot healing, that could be the cause. Are you doing this?
no. as soon as i enter the develop module, its cpu usage just spikes. I don't know what could possibly be causing this.
I am a fairly advanced user and this has never happened before
Try switching the setting on "Use Graphics Processor" under Preferences in the Performance tab.
Also, did these photos havea lot of brushing or spot healing applied previously in Lightroom?