atwl77 Well that's what I thought as well but I am not a gamer so wasn't sure that maybe the graphics card was the issue. The hard drive was the other thing I thought might be an issue but just checked and I have 289 GB free so that should be plenty.
The thing is, I've been Zwifting all winter, usually around 3/week and never had a problem. I would read peoples posts about Worlds loading slowly, or not responding and thought to myself, "that's never happened to me" and then all of a sudden, it just became a problem.
The only thing that has changed since I starting having the problems was the update to the new Makuri Islands. I did the update when it first came out, rode it and then didn't ride again for nearly 11 days and then the problem started.
BTW I appreciate your advice.