When I record video with my Pixel in portrait and create a short video in Movie Studio with a few 30 videos clips together, it can take 30 minutes or longer to render the 2-minute video. If I rotate the videos 90 degrees (viewing them sideways), the same videos render in a few seconds. Of course, there's a bunch of black space on either side of the 1920 x 1080 video, but that's not unusual. I tried it with Clipchamp and it rendered in a few seconds. What am I doing wrong, other than shooting video in portrait, that needs to be portrait to suit the scene. Thanks in advance for helping this novice understand.