I have just purchased Vegas Pro Edit. I am working with it, and the preview pane is terribly slow, even at one quarter. It is totally unusable for edition because I have no way to check how stuff is going. My computer is 16GB, i7 processor, Nvidia graphics card, I dont remember the exact model right now, however, I have always used AE, Premier, Filmora, Shotcut and I finally decided to purchase Vegas Pro but I cannot get things done. Never had this issue with all the other software. I am unable to find a link to get customer support either. So, please, I do appreciate if I can get proper assistance as this is starting to get annoying. I just checked everything to a quarter and when clicking on Play, the CPU goes to 100% in Task Manager.