2015.2 release, plenty of horsepower (using only 3% of my 64 GB ram), but just SELECTING layers in my timeline (not even viewing them) is painfully slow. I'm working on a very light project but moving layers in the time line and adjusting keyframes is basically impossible.
To clarify, scrubbing the timeline is silky smooth. Just selecting layers (even when they're not displayed or even turned on) is SLOOOOW.
Nevermind, realized some of the assets in my project were drawing from an old archived server