I'm using Wing IDE 4.1.6-1 on a MacPro, with 2 x 3Gz dual-core xeon processors, with Mac OS X 10.7.4 When I debug some of my code, it can take 3-4 seconds to single step to the next line. I've checked, and no other applications are using the MacPro CPU while I'm debugging. Any ideas on how to speed up single step debugging?