You’re complaining because the system is working as it should. If you’re a 400 you shouldn’t be winning in the 350-520 cat. You should be somewhere in the middle or even lower. Those guys beating you aren’t A and B’s. Those are guys with a 500 ZRS, racing in the correct category. Focus on racing the guys near you and let those 500 ZRS guys go.

What is your ZRS? If it’s 370 and you’re racing in the 350-520 band then this is exactly what should happen. If you’re at the bottom of the category you should be finishing in the bottom half. Dropping the 520 down to 420 wouldn’t help. You would still be at the bottom of the Cat. The only thing that would help is to increase the 350 to 380 and then you might even win. The problem isn’t with the system, it’s that you don’t like where you are on the score.

The range in the Tiny Races is 0-260. In reality nobody is a 0. If you look at the results almost everyone finishes fairly close to what you would expect based on their ZRS. My ZRS is 230 and I finish somewhere between the top 40% to 10% depending on the route. Exactly where I should.

You don’t have to know the rules. You just ride the races. The only reason to know the rules (algorhythm) is to game the system.

Have you checked your profile on zwift.com to see if the new 5min power is registered there?
Your score won’t always update from a 5min PR, it only impacts your floor score which is 15% lower than your seed score. So your score will only update if your new floor is higher than your previous score

No way that I know of.

Ditto! I haven’t even done any “proper” races with ZRS enforcement, just group rides that I enjoy which often become spirited at the end. My 20 minute power is 3.4 wkg and my 5 minute power is 3.61. My score jumped overnight from just under 500 to 595 apparently based on just one 60 minute C category group ride in which I was sixth at the end of the hour. I would have never sprinted with the As and Bs in the front group had I known I’d get bumped way up for a result that wasn’t even in an actual race.

Is there a time series graph of my 90 day power numbers available somewhere?

See https://zwiftinsider.com/racing-score/

“A down arrow with a line below means you’ve hit your floor score – the lowest possible score you can reach based on your 90-day power numbers.

An up arrow with a line below means you set a new power best, which increased your seed (and thus your floor) score. This arrow only shows when your new floor exceeds what you would have otherwise had as a result.”