High CPU

Starting a few versions ago I noticed WW was occasionally running around 25% CPU. Generally this occurs at seemingly random times during the day, not necessarily when WW is first launched. If I exit the program and relaunch, CPU will remain normal for a while, sometimes several days. Since I’ve noticed this on both my W8.1 x64 and W7 x64 machines I thought I’d mention it. Has anyone else run into this?