I'm running Adobe After Effects CC 14 on Mac OS X Yosemite 10.10.3. -
3.5 GHz Intel Core i7 Processor
RAM 16 GB 1600 MHz DDR3
1 T Flash Drive
Recently Installed Trapcode 12.2 and Element 3D V2
Playback was before installation of these two plugins.
Now I can't even play movement of shapes in a comp with two layers and no plugins utilized.
Need anymore information?
NVIDIA GeForce GTX 780M 4096 MB
After Effect 18.104.22.168
Installing some plugins shouldn't cause an issue like that. Perhaps it's just a coincidence and Windows downloaded some update that caused it.
Update your graphics card driver (or roll it back if it recently updated).
If that doesn't fix it, could you use the Print Screen key on your keyboard to capture your full interface so we can see it better?
You're saying this happens in any project in any comp, no matter if any effects are applied at all?
Try installing an older version and running it to see what happens.