The server lagging out.

[Amalb]

Internal Exception: io.netty.handler.timeout.ReadTimeoutException

As badwin mentioned, you should try switching to a dedicated host...

Here's one: http://snowstormservers.com/
That was my server's host... Their servers have great specs... You can definitely have an uptime of over 95%

Also, in case of an outage, they will immediately troubleshoot, and fix it within 2 days...