I use windbg to analyze DMP file,it seems to be something wrong with hubservice.dll ,so i disable Use Steinberg Hub in Preference Tab,and voila!!! quit smoothly as criminal,no freezing,it works for me, give it a try 
I use windbg to analyze DMP file,it seems to be something wrong with hubservice.dll ,so i disable Use Steinberg Hub in Preference Tab,and voila!!! quit smoothly as criminal,no freezing,it works for me, give it a try