I'm using a mqtt gateway to send data to the nodes. It is possible you will run into the same issues I guess but that should be easy to test. Just send data on a regular basis to the out node and try to receive at the same time. I use the VAR_1 type in the message of I'm sending data from node red to a node

@jgrieco You may try log raw data from the gateway. https://github.com/mycontroller-org/mycontroller/issues/473 This changes available in SNAPSHOT version