iMacUser

I have the same issue with the HDPro 2017 trial version on latest Sierra 10.12.3 (also with Interiors trial). CPU usage jumps to about 180-220% when moving the mouse pointer around in the drawing pane (otherwise about 2-7%; quad core 4 GHz i7 on Retina iMac Late 2014). Unfortunately, I don't know if this is normal as I am only trying out the product before buying and have no other Mac/OS X combination to compare.