Latest version of NA maxing out CPU

Since a few weeks ago running NA has maxed my CPU during a full scan.  I am running Win 7 on a desktop with a SSD as my main drive.  Scanning the SSD brings my CPU temp up to 175 degrees thus causing warning messages from monitoring software.  All 8 cores are maxed at 100%.  Never saw this happen before so I am assuming there was a core usage modification in NA.  Once the SSD scan is completed and NA moves to conventional HDs on my computer the temp drops down to a reasonable 130 degrees.  I can manually drop the temp by setting the Asus EPU-6 Engine to lower CPU speed.  My question is:  Is there a setting in NA that will allow me to control core usage and thus control CPU temperature?