12 gb ram.
Asus Geforce GTX 1060 6gb
Broken: 2.78.5 hash 66383ea
Short description of error
When i hit play, the playback is at around 10fps, if I make an other object that's not that armature active, it will go up to 20fps, (the gif shows it at around 17 i guess recording the screen makes it slower)
Exact steps for others to reproduce the error
As you can see is a simple scene with the agent dowloaded from the cloud linked, using the low res version and animating it.
I can provide the files upon request if that will aid the process of debugging.