I’m using the Android version of client (on a Fusion5 tablet ) with OSX. ( High Sierra ).
I left my android touchable Pro and the mac server app running while doing something else for many hours yesterday afternoon and returned to the mac late in the evening wondering why everything seemed so slow.
I looked at the process app and the TouchAble Server app was using around 40GB RAM on a 16GB physical RAM iMac!
Seems the server is leaking. I think the android app may have stopped running and the connection between client and server was broken and that the leak on the server app has something to do with this.