Maybe this will be helpful to some of you.
I am technically challenged and haven't figured out how to use the web based software so I have been trying to use the buggy HEG Studio. It's still V 0.4.9 so I don't expect perfection. I'm just trying to make it a little bit functional.
The software generally works for 10-45 seconds but then the readout above the animation disappears and the flight movie freezes and I have to exit and restart the program. My computer is about 9 years old so maybe the computer is too old for this application but it's all I have to work with so I have to make it work.
Even when the movie is playing, it's hard for me to tell how well I'm doing. The movie jumps all over the place. I am assuming if my frontal cortex were properly oxygenated, the movie would play smoothly.
I made a slightly shorter and much more boring video. It has numbers on a blue background counting from 1 to 6. Then to keep things interesting, it shows a photo. Each number and the photo should stay on screen for 2 seconds. With this simple video it's much easier for me to track my progress or lack thereof at this point.
More importantly, the shorter video seems to keep the program from freezing quite so quickly. It still freezes almost 100 percent of the time. And it still sometimes freezes after less than 20 seconds. But I've also been able to get sessions longer than three minutes. That's still too short of a session to be practical but it also seems to be close to my brain's limit now. After three minutes, I'm exhausted.