Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)
FCP 6 only allows Unlimited RT with some specific resolutions. The workaround in post 5 above does usually work, but because then it is interpolating to a specific supported resolution on the fly, it will be slow, and you may have to drop down to a lower resolution proxy to play smoothly.