Running QLab3 on a Mac Pro tower (OS 10.8-ish) hard wired to a TP-Link high gain output router (hidden SSID, MAC address filtering, ARP binding MAC address to IP Address, dedicated to StageCaller traffic only) 2 iPhone 4 (1 is a backup) with latest release of StageCaller and most up to date iOS they can have (iOS 7.4.2 I think) with static IP’s. Phones have heartbeat (via MIDI) acrivated and Active in background option on. I am triggering phones via OSC and upon initial setup seemed very stable. Over the duration of rehearsals and now into tech the phones seem to become less and less stable. I have shut down the app and the phones regularly since running into some instability and that hasn’t seemed to have corrected it. I am using the MIDI monitor suggested in previous posts to monitor the Heartbeat. In the course of a 2 hour tech run today I had the phones dropping off the network (according to the MIDI monitor) but still triggering via OSC or sometimes they were on the network and sending a heartbeat but wouldn’t trigger via OSC. Any ideas as to where I should start would be appreciated. Also the phones first started to show instability when moved up to the reaheasal space where they in the same room and not more than 20 feet away for the router.