Disk space reduced by 17% after URSA 8.5 update

Although I love the features new 8.5 Beta update on my Broadcast Ursa G2, I'm disappointed that the proxy files that are created for BRAW sacrifices valuable storage space. I have no need for Proxies - i take my media straight to my edit suite and it's fast enough to not need to work on lo-res clips.
I record a lot of live theatre, and my CFast cards usually records 5 hours and 5 mins which is means 17% of my storage is wasted. If there was a way of turning this off Proxy record I would be very happy.

I understand I can roll back - but I am enjoying the other features eg ability to delete clips etc.