The
Shared Variable is meant for sharing data over a network while hiding the network implementation. I can't speak much to the performance, but I can recommend other ways to help.
Ideally you should try to reduce the number of global variables that you use in the first place. If you are getting lost in the number of global variables that you are using, you are probably using too many. There are a number of ways to reduce the number of globals.
The easiest way would be to send a cluster using the global, instead of using single data types and multiple globals.
If you want to get into the more advanced LabVIEW topics, you can change your architecture to use other message passing schemes (Notifiers, Queues etc). Depending on your implementation, you could possibly get away with not using
any global variables at all.