Mysql on Host and real-time update

Hy Nathan, thank you for this plugin.

We are going to use your plugin in or Workshop, connecting 4 different clusters (design groups). 

As far as we are not really good in databases, I want to ask you for a good advice.

We need to establish a server and it looks better to make it on host in the internet.

But can Slingshot connect to hosted server, and i wonder if it will be as quick as a local server (anyway via wi-fi )

Second question is abour speed of update. we are dreaming to make  a real-time data flow.  But As i see in your tutorials, even update of a hundred of points is quite long process (abour 5 seconds) well, 5 seconds is ok, maybe. But can you advice how to deal with databases through grasshopper in a most rapid way?

For example. is it better to make 4 different flows through one database wih 4 tables, or for databases, or one table?