Greetings! I have experience test driving games from back when I would stream on twitch. I mad e a a few connections with some hobbyist programmers that would promote my stream on their social media pages and I would demo their game. I'm not a programmer, so you don't have to worry about that!
My computer is windows 10 though - so that obviously may be a deal breaker for you.
However, I also own xsplit recording software - so I can record myself while I'm playing (I have a beast-ish machine). I also know how to edit the video, so I could clip it down just to the relevant parts that I have commentary or questions on. Obviously if the challenge is that the game simply won't load on Windows 10, then... that's a bigger problem I can't help with.
Please let me know if you have any questions about my gaming experience!
Kellie