I did the Zwift TNW East Coast "C" Race last night......I did it last week for the first time and was dropped after 15 minutes. This week, I knew when the pain was coming and was able to stay with the front group and roll in for a top 5. Ended up averaging 237 watts (I only weigh 139) for 45 minutes and earned a new FTP as a result, haha.
As people here have already said, I've never done a real life C race that was this hard. I'm going to try the B race next time I do one, but since they also roll out with the A's......I'll end up OTB and riding solo pretty quick, I think.