I had problems when running HA on an RPi as well. It was never very snappy or stable in its connection with the Z-Wave network. I don't know if it was too much

I had problems when running HA on an RPi as well. It was never very snappy or stable in its connection with the Z-Wave network. I don't know if it was too much power being drawn by the dongle or what, but switching over to a mini ThinkStation that I got for cheap on Ebay solved the problem. Not only perfectly stable with the connection to the Z-Wave network but also just overall more responsive.