What’s up with the disconnect between silver miners and the actual metal?

If anyone else has been invested in silver miners they might agree that the miners have been rather.. sluggish. Compared to the parabolic moves that spot silver and silver futures have been making it just feels almost disconnected. Is this just lag? What I’m asking is will the miners catch up to the current prices?

Especially after the China export ban goes into effect on New Years, would this be a catalyst for North American miners such as PAAS, AG and SILJ?