The out of control propulsion system was increasing its output by the moment. The situation became more and more unpredictable with the way things were going. Due to an initial design flaw, the propulsion unit had several smaller stabiliser engines around it. As the engines were controlled by the propulsion unit's AI, the moment the system went out of control, so did the stabiliser engines.
This resulted in the whole island quaking under the enormous and unstable propulsion. Even though the artificial gravitational system strained itself to regulate the force of gravity, to lessen the impact caused by the quakes, many areas still did not escape unscathed. A few old structures had collapsed altogether whereas some places had sinkholes and cracks. The island was under such pressure, which exceeded its designed capacity that the island was slowly breaking apart. It was fortuitious that the hoop was very resilient and somehow managed to hold the island together, if barely.