Cool, glad it worked out. Usually I will make a lot of backups of everything just in case. I’ve accidentally screwed up a whole project because I wasn’t paying attention a couple times, so I learned my lesson. Like I said I think the issue is because Shotcut is applying effects and edits in real time. Something to look out for is when you’re playing a preview and the program hesitates for a second as it passes over an edit or effect. Usually as soon as that starts happening, I know I better start using the McGuiver method.
I actually spent 9 hours editing a 3 minute video last night. Usually I just work with 1 video and 1 audio track, but this one required 4 video tracks and one audio track, because I had to edit out teamspeak chatter and I had to crop the video to hide stuff on the player HUD for a game. So there was a lot of tiny edits and the cropping apparently puts a lot of stress on my computer. So I was having to take it even farther and editing 10 seconds at a time.