Hi, I just downloaded the last 4.14 preview update (3) and tried the rolling template. I see some very strange artefacts both while editing and playing in the editor, on a MacBook pro Retina, 15-inch, Late 2013 with NVIDIA GT 750 M and MacOS 10.12.1.
See the video:
https://.com/watch?v=XVfGfXxb_s8
Also I see some artefacts on the FPS template:
4.13 does not have these problems, so my graphics card should be ok 
EDIT: I should add that I did not change any settings. This is what I see just after opening the projects for the first time.