I don’t think it a either fair nor reasonable to say there are people that don’t have problems so therefore its your own fault. There are lots of people with all sorts of problems with this relatively expensive software so you could also say that. Making generalizations based on the echo chamber of which echo chamber you sit in ( good or bad experience echo chamber) is very unhelpful.
I have been simming for 25 years and spent lots of money and good fast reliable hardware and I have still had issues including a week where it would not even load without a CTD and no response from the Zendesk. In the end it was a Nvidea driver I had to roll back and I got help from reddit and not here because so many people like your comment just listen to their own echo chamber .
I just installed the latest version of p3d v5.1 and it just worked first time and probably because Lockheed actually properly test their software before release and furthermore they are serving just one master the PC not a X Box master as well which I suspect cuases and will continue to cause issues with this software for PC users.