Performance has been extremely poor in 2020. I work at a post house in NY, working off a high end server via 10gig connections and playback in 2020 has been extremely problematic for us. Also happens when editing locally off SSD storage. We usually are working with 3.2k Arri stuff (occasionally Red) -- usually with1920 prores proxies attached and we still are having issues with lag and general performance. This is on a variety of high end machines -- iMac Pros, 2017 iMacs. I'd love to see a focus on overhauling performance and stability in the new release. It's getting to the point where the platform it is becoming a real problem for us. Thanks!