If you have a purple jet and 2x gold you can gain almost 2.5x gold Purple jet will make farm conveyor be way faster so it’s more gold, 2x gold gives more gold
your wrong you don't need purple jets since he is using 5 studs speed conveyor and that is already a speed setting for both jets and even if it was 25 studs it would make less since he's going too fast through the stages
it gives 17,820 per hour without 2x gold but theres some bugs going on in the game, like the portal not teleporting, after 3-5 seconds. which now gives 16,770 or less.