Canon XF705 Professional Camcorder

This is an old thread but I thought some of you still might be following.

A new version of Premiere Pro - v15.2 - was released today and it dramatically improves the playback performance of XF HEVC media, like the XF705 uses. I'm on an iMac Pro and I can play back 4K 59.94 fps at full quality with only occasionally a dropped frame. (I see the dropped frame indicator go yellow but don't actually see any performance issues.) If I switch to 1/2 quality, the dropped frame indicator stays green.