There is a Guildwork support forum...
http://guildwork.com/forum
...you could probably bring up performance issues there, and get a more direct answer as to whether it's a site issue, GW plug-in issue, or if it's working as intended but just not updating quickly.
You might have to log-in to post there, though.
EDIT: The OP deleted his post or something, so it looks like I created this thread due to the deletion.
