11.3 CPU Spikes

I've been noticing random spikes in my CPU during playback. It can take up to 3 minutes for the spike to occur, and once it happens it stays hovering around 100%. It appears to be completely random, not plug in specific or anything. It also appears to only be hitting one core hard, while the other cores remain relatively low. Has anyone else experienced anything like this with the new 11.3 release? Forgive me if this has been covered, but I didn't see anything about this in relation to 11.3. I also use a UAD2 Satellite and Waves plug ins. I'm ready to try Logic at this point, sheesh.



2012 MacBook Pro

10.9.5 Mavericks

16 GB RAM

i7 Quad Core

PT 11.3.0