Monero pool connection is unstable.

Got connection time out on half of my rigs.

XMR:  Stale share found - skip
XMR: Stratum - Cannot connect to europe.monero.miningpoolhub.com:20580
DevFee: XMR: Stratum - Failed to connect, retry in 20 sec...
GPU6 t=48C fan=32%
XMR: 10/02/17-01:56:09 - SHARE FOUND - (GPU 5)
Share accepted (797 ms)!
XMR: 10/02/17-01:56:13 - SHARE FOUND - (GPU 5)
DevFee: XMR: Stratum - connecting to 'europe.monero.miningpoolhub.com' <172.104.148.42> port 20580 (SSL/TLS)
Share accepted (1468 ms)!
XMR: Stratum - Cannot connect to europe.monero.miningpoolhub.com:20580
DevFee: XMR: Stratum - Failed to connect, retry in 20 sec...
GPU6 t=48C fan=42%
XMR: 10/02/17-01:56:40 - SHARE FOUND - (GPU 1)
Share accepted (3047 ms)!
DevFee: XMR: Stratum - connecting to 'europe.monero.miningpoolhub.com' <172.104.148.42> port 20580 (SSL/TLS)
GPU6 t=49C fan=43%
XMR: Stratum - Cannot connect to europe.monero.miningpoolhub.com:20580
DevFee: XMR: Stratum - Failed to connect, retry in 20 sec...