I had a similar problem with L/W 4.14.10 Pro and what worked for me was to uninstall Java and all Java updates from your computer and download the offline most current version JRE 6 from Java.com. Also, I uninstalled L/W.

I loaded the new Java first and then L/W and now L/W doesn't use up all of my CPU time which was taking before over 90+% of the CPU.

Hope this helps.