This was my production area and it normally started up within 25 minutes! Then I didn't even have to stop the connectors. At this stage, there's not a lot of alarms to process. So SOI doesn't have to 'work that hard'.
I rebuilt my SOI Manager from scratch, but not the UI. When I started my UI, I noticed alarms coming in to the GUI. All my connector services are in a stopped status and when I rebuilt the manager, created a new database. So there is only 2 places these queues can come from. Either the EventStore on the connectors (which I doubt as the services are stopped) or the GUI itself. (....SOI\SamUI\solr\data). I see now that file is 6GB big!! Need CA to confirm this though.