We successfully solved it with the usual log-out at the beginning of the game. Hiding for a long time brought big empires and more money than usual. High ship classes clashed with mixed results.
The gunsmiths were full of Iberon, but nevertheless scrambled out of space battles. He digested his neighbor with his superiority in numbers because the opponent did not build ships, he only always developed the latest. The Shinari colleague got to the paralyzer, and the Godan replaced his remaining heavy corvettes with a single battleship of maximum firepower. It is not a bad thing to torpedo and cannon from a distance.