Can't put the entire explanation here since they limit my comment length. But I explained everything in the Video Description.

In short: I reversed the order in which I do the scenarios. There's a huge RNG check in Scenario 3 with the Trader. I optimized Scenario 2's Wood Production, since the last speedrun had big wood issues that were solvable. And I managed to scrap off 2 Seconds from Scenario 1 somehow in my best attempt, so not much to optimize there.

One issue there might still be is differences in loading time, but I have to go through all the runs we have and calculate how severe the loading time differences are and if there's a method to solve it. Well, there is, namely me doing it manually.