Got a new iMac Pro to use. After effects project is a keying job, using 6K prores files and exporting to prores 4444 with an alpha channel. Not a hugely complex key, has a couple of precomposed layers with masking and key light.
iMac Pro renders keep failing - main error is saying there is insufficient ram. The machine has 128GB and it absolutely flies in fcpx, redcineX, motion and resolve.
Same project exports fine on 2013 Mac Pro - any ideas why??