From a first impression, it looks like you have 19 million results, so 5GB might not be that far fetched, however, we’re still looking into this.
Have you noticed by any chance if the progress bar was updating? What OS are you using?
I’m glad that it’s working for you (partially, at least ). One suggestion that might help is using the timer option (or the trim after capture option). This way, you can capture only 0.1 seconds of data for example.