Evolution of giant planet dynamical instability runs, and corresponding energy and angular momentum uncertainties. The top three evolutionary tracks are for FP64 forces, while the bottom three are for FP32 forces. Red is for Jupiter, orange for Saturn, cyan for Uranus, and blue for Neptune. The evolution of the giant planets looks qualitatively similar irrespective of the force precision, and the energy uncertainties are also of similar magnitude. Once again the angular momentum conservation is better in FP64 mode. The high eccentricities in some runs of Uranus and Neptune have to do with the proximity to their 2:1 resonance.