Allow minicap to skip frames when necessary.

lib/units/device/plugins/screen/stream.js

@@ -178,7 +178,7 @@ module.exports = syrup.serial()
 
     FrameProducer.prototype._startService = function() {
       log.info('Launching screen service')
-      return minicap.run(util.format('-P %s', this.frameConfig.toString()))
+      return minicap.run(util.format('-S -P %s', this.frameConfig.toString()))
         .timeout(10000)
     }