Hi ShadowPeak,
Thank you for this detailed post! I'm an engineering manager here at GoTo and we do look into post here in this community. I agree with your assessment: it does sound like the 4GB limit. This is a very good observation and the best we can hope for as a bug report. We are looking into issues like this and performance in general. Do you have an option to upload those dumps somewhere? They might be useful. We'll try to reproduce your observation in the meantime.
Can you tell us more details about the session? You wrote it has been running 7 hours+. Was that indeed GoToTraining? And which features did you use? Webcam, ScreenSharing, Breakout Rooms, Recording, Drawing Tools or Remote Keyboard and Mouse Control (Control Sharing)?
