interestingly no, i can play my 5K Red files at ‘1/4 rez good’ or 1080P Prores 4444 clips all with a handfll of nodes and better than real time tracking no problem.. but 1080 5D MK3 ‘All-I’ clips its back to treacle slow. The All-I codec should be a discrete/ non GOP format with embedded timecode so its a mystery to me why its grinding resolve to its knees?
thx tho all for your input so far