So I know this is hot topic at the moment, and maybe this has already been answered, but to be honest, I don't have time to go searching for the answer!
Basically I can't work on the same project, on the same version of AE on different machines. Its a bit ridiculous!
AE works fine on this machine:
iMac 27' Late 2012
3.4 GHz Intel Core i7
NVIDIA GeForce GTX 675MX 1024 MB
3TB Fusion Drive
AE is unusable on this machine: (Awful ram preview, frame rate lags, audio crackles and jumps around)
iMac Retina 27' Late 2014
4 GHz Intel Core i7
AMD Radeon R9 M290X 2048 MB
A the moment, when using the retina machine, Im caching my project onto the local SSD rather than using an external. Perhaps AE doesn't like this? maybe 250GB isn't big enough to keep it happy? Or theres a conflict with the graphics card? These are the only things I can think of. Any advise/insight would be much appreciated.
It's probably the AMD card and configuration. For example, on my older Mac Pro or even on my Mac Mini, if I add the render cue to the bottom of the timeline and size it down so that it's almost completely gone I get perfect ram previews even with 4K footage. I don't have to do anything to my MacBook Pro R with the Nvidia card. See the Render Cue way down at the bottom?
4K warp stabilized 30fps video from an iPhone 6s+ previewing in Real Time on a Mid 2011 Mac Mini with no problems at all.
Thats really odd!! Thanks, I will try this later, hopefully something so simple will solve it
Thanks Rick. It now previews like a dream...
Such a weird bug!!!!