By default, all data is stored under c:\Users<username>\AppData\Roaming\Hyperspace.app\hyperspace-light, and that path is saved in config file. If I move that folder to different location and edit config.json accordingly, it doesn't work. Immediately after launch, the path in config file is set back to default value. I tried to remove write access to config.json on filesystem level as a temporary measure, but that is pretty useless, config stays unchanged, but wallet still uses default data path.