I have used TimescaleDB in my last work place. We needed a easy way to store and visualize 500hz sensor data for few 10s of devices. We used it and Grafana to build a internal R&D tool and it worked way better than I imagined. Before I left I think the DB was using ~200GB on a compressed btrfs volume in DigitalOcean droplet and still performed fine for interactive Grafana usage.