I’m comparing the exact same files in the latest version of After Effects CC 2015 in both.
Clean the chache didn’t do anything.
New:
Viewer> Adaptative resolution
Memory (no multiprossesing option available)> 28.3gb RAM available for AE, reduce cache unchecked.
Preview settings> Adaptative resolution 1/16, GPU 3.25 GB (enable but unsupported for CUDA), zoom and color managment:Faster
Old:
Viewer> Adaptative resolution
Memory (no multiprossesing option available)> 13gb RAM available for AE, reduce cache unchecked.
Preview settings> Adaptative resolution 1/8, GPU (unsupported) 2.84 GB (enable but unsupported for CUDA), zoom and color managment: Faster