Variable hashrate
Hi,
I have 2 PC running xmr-stak miners. Both the miners report constant hashrate, but the proxy report variable hashrate:

[2017-10-10 08:13:22] 4.7 KH/s, shares: 245/0 +1, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:14:22] 0.0 KH/s, shares: 245/0 +0, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:15:22] 9.5 KH/s, shares: 247/0 +2, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:16:22] 4.7 KH/s, shares: 248/0 +1, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:17:22] 0.0 KH/s, shares: 248/0 +0, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:18:22] 0.0 KH/s, shares: 248/0 +0, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:19:22] 0.0 KH/s, shares: 248/0 +0, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:20:22] 0.0 KH/s, shares: 248/0 +0, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:21:22] 4.7 KH/s, shares: 249/0 +1, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:22:22] 0.0 KH/s, shares: 249/0 +0, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:23:22] 0.0 KH/s, shares: 249/0 +0, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:24:22] 4.7 KH/s, shares: 250/0 +1, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:25:22] 4.7 KH/s, shares: 251/0 +1, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:26:22] 4.7 KH/s, shares: 252/0 +1, upstreams: 1, miners: 2 (max 3) +1/-1
[2017-10-10 08:27:23] 4.7 KH/s, shares: 253/0 +1, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:28:23] 0.0 KH/s, shares: 253/0 +0, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:29:23] 0.0 KH/s, shares: 253/0 +0, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:30:23] 4.7 KH/s, shares: 254/0 +1, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:31:23] 0.0 KH/s, shares: 254/0 +0, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:32:23] 11.5 KH/s, shares: 256/0 +2, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:33:23] 0.0 KH/s, shares: 256/0 +0, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:34:23] 0.0 KH/s, shares: 256/0 +0, upstreams: 1, miners: 2 (max 3) +0/-0
[2017-10-10 08:35:23] 0.0 KH/s, shares: 256/0 +0, upstreams: 1, miners: 2 (max 3) +0/-0

Even the pool worker stat report variable hashrate.
![worker_stats](https://user-images.githubusercontent.com/32637880/31372816-daadc484-ad97-11e7-948b-9ea6abcfa985.JPG)

I have noticed that the miners have frequent connection problems:
2017-10-10 04:22:01	RECEIVE error: socket closed
2017-10-10 04:32:10	RECEIVE error: socket closed
2017-10-10 04:42:21	RECEIVE error: socket closed
2017-10-10 05:26:15	RECEIVE error: socket closed
2017-10-10 06:11:54	RECEIVE error: socket closed
2017-10-10 06:33:23	RECEIVE error: socket closed
2017-10-10 06:46:42	RECEIVE error: socket closed
2017-10-10 07:26:31	RECEIVE error: socket closed
2017-10-10 07:36:40	RECEIVE error: socket closed

Are those issues correlated?
How can i solve them?

Thanks