How long would you expect it to reasonably take to export a 40-minute 1080p project? I understand that this will vary quite a bit, depending on the computer, and complexity of the video. I'm using a 4-processor (Intel I-5), 3.10 ghz Dell desktop, 8gb ram. When the export is running, the cpu usage is at about 73%, memory is 33%, disk is 2%. It's taking well over an hour, closer to 1-1/2 hours, to export the video. Does that sound reasonable? What could I do to this computer to improve that?