We've been trying to get 3DConnexion to acknowledge and fix this issue for years, but so far no luck! It doesn't happen to everyone and doesn't happen every time. There's been a topic on the Trimble SketchUp forum where simoncbevans found that if he disabled the MacOS firewall while installing the driver and then turned it back on afterward that his device started to behave. I tried that, and for me the results are still erratic: many times SketchUp will work just fine, and then suddenly for no obvious reason the memory blows up again.