Specs for a optimal computer for CA?

I bought a mid-range computer for animation 5 years ago which was stated to be more than adequate for animation.  It performs like utter crap with body tracking.  In Dave Werner's body tracking demo video, the puppet is keeping up with all his movements with a decent frame rate.  My playback is around 6fps and with a delay of about a second or more.  Unusable.  

I know little about the insides of computers. Could someone at Adobe recommend minimum CPU/GPU/RAM specs to replicate the smooth performance Dave is getting in his videos?

I have  (PC) :

graphics card: Radeon R7 350

CPU: AMD Fx 870K  Quad Core 3.6Ghz

16GB RAM

Thanks for any information!