Hi
I have installed openHAB in December and started using Z-Way. I have noticed that CPU usage was huge (over 100%) and after a few hours system started to block, additionally there were errors with parsing JSONs from Z-Way API.
After a few days of testing I gave up and switched to Z-Wave binding - works like miracle and CPU is up to 3%.
Cheers,
Piotr “Rook”