How does the speed bonus work?
Go to your “Planets” screen. First you need to calculate the distance in hours/ticks. Say you travel from (1,1) to (7,9) The time you have to travel: x-coordinate: 7-1 = 6 y-coordinate: 9-1 = 8 6*6 + 8*8 = 100. Square root of 100 is 10. So your travel time is 10 weeks. Now the speed bonus. 0% bonus -> divide travel time by 1 20% bonus -> divide travel time by 1,2 40% bonus -> divide travel time by 1,4 60% bonus -> divide travel time by 1,6 80% bonus -> divide travel time by 1,8 100% bonus -> divide travel time by 2 200% bonus -> divide travel time by 3 0% speed bonus: 10/1 = 10 weeks.