Extreme Lag with program

Hate to spoil the party. On my Mac Pro performance is much improved over 10.1.4. Rendering is way faster and I am not getting any lag or other slow-downs. Not using up RAM as before either. I noticed that Memory Clean shows I am using 3 GB more RAM overall than Activity Monitor does. All other numbers are fairly close between the two. Not sure what that's telling me at this point.

In my case the performance is much worse with 10.2 than with 10.1.4, tried all but sluggishness appears after several minutes of working regardless of what i'm doing... Even creating the waveforms makes the laptop fans really hot.
Timeline mixed h.264 with xdcam hd, Macbook Pro early 2011 16 GB RAM SSD 1 Tb.
And manifesto plugin (FxFactory) doesn't show text when nested inside secondary storyline, that's weird...
So far reverted to 10.1.4 because of work...