It could be, but I wouldn’t really expect many changes in performance from the previous version of Node-RED, which was 3.0.2
We haven’t detected anything in our instances. It may be due to the operations that handle the actual upgrade if the upgrade was done just before checking the memory status. Or any other operation running in the server.
We’ve update the plugin to version 1.6.0 which tackles some of the issues reported here. Let us know if you find any issues and thanks again for the report and your continuous interest in improving Thinger.io! 