Why are my ENVE SES wheels rubbing on frame when Zipp 303 didn't? Same tyres The 25mm tires are rubbing and they didn't when I had Zipp 303 on Cannondale 2017 EVO.

Seems like every time I put any pressure or even turn, tyres rub the frame. I'm only 140lbs (63 kg) and this is my 3rd Cannondale EVO but never have had any issues until adding ENVE wheels.

I added the Enve last year. They didn't rub during the Cache Gran Fondo only started after I got home (Colorado).  They've never really rubbed, just started after Gran Fondo trip.  I'm using the same Continental Gator Skin tyres as I had on the earlier on Zipp 303 wheels.
Many rear wheels with high-profile rims lack lateral stiffness. The beefy rim itself may be stiff, but there may be too few, too thin spokes, possibly at too small angles. As a result, when you ride out of saddle the rim and tire may be moving sideways enough to rub the frame or brake pads.

Here's a very good article if you're interested in this in detail: Debunking Wheel Stiffness

Also, you're not alone with this problem with Enve SES wheels: ENVE SES 4.5 with ENVE hub => brake rub