I updated to After Effects 2017 upon its release and since then have had an incredibly slow experience. I migrated over all my settings and was achieving decent performance for the work I do (mostly text and simple image motion graphics; not very intensive stuff) with AE 2015.4 but since updating everything moves like molasses. Even on a fresh program with only a simple background and a text resizing keyframe, it takes 30 or 40 seconds for the preview to cache out and then playback never fully plays in real time. I don't know what settings to adjust to get the performance back to the smooth state it was in in AE 2015.4 but I'd rather not go back and re-install the older version. Has anyone else had this problem or been able to fix it? My system specs are below; again, it's not the most powerful machine on the block but it was able to handle at least relatively medium sized projects in After Effects before the update, so what gives?
System:
iMac (Retina 5K, 27-inch, Late 2014)
Processor 3.5 GHz Intel Core i5
Memory 32 GB 1600 MHz DDR3
Graphics AMD Radeon R9 M290X 2048 MB
OS MacOS Sierra 10.12.1