Has anyone else noticed this about mod folder loading?

Disclaimer: This is all speculation! So take it all as a personal opinion and not fact. I'm not a developer; I'm just a player lol.  

Some (uneducated and informal) observations I've made while experimenting with my very modded game:

1. Build-Buy CC loading starts once you click the executable and ends when the Sims 4 logo opening screen appears. During this period, you can see the game gaining memory usage in Task Manager, but nothing will pop up on your screen until the game is done reading all your Build-Buy files. If you have more Build-Buy CC/a weaker computer, this period of nothing popping up will be significantly more noticeable. Vice Versa (Small Folder/Fast Computer = Almost Instantaneous/No Period of Nothing)

2. CAS CC loading starts once the "Sims 4" logo opening screen appears and ends once the loading screen (spinning plumbob) appears. If you have more CAS CC/a weaker computer, the logo will stay on your screen for longer.

3. Everything else starts loading when the loading screen pops up and ends when the main menu appears.

Main Point: From my experience, Build-Buy CC takes longer to load than CAS CC**, even when the two share a similar amount of files/only low-mid poly creators are being used. My hypothesis is this difference in loading time is caused by the game loading the Build-Buy CC before the opening screen appears. I think the game's loading times (for modded users) would benefit from making Build-Buy CC load at the "Sims 4" opening screen, just like CAS CC. 

**This discrepancy is SIGNIFICANTLY more noticeable if you're someone who merges your CC. In my experience, merged CAS CC loads faster than unmerged CAS CC. However, merged Build-Buy CC loads slower than unmerged Build-Buy CC. I also think this difference is a product of the loading order. 

Has anyone else with a modded game noticed this? Do you agree with anything I said? Disagree? Any other things about the game you've noticed?