How to optimize loops?

[slate geyser]

Depends on how often you need to run it

All that runs in 54 ms

then it'll take about 4 frames on 60fps

Yeah just saying that time it takes would be about 4 frames if ur game was running at 60 fps

So you shouldn't optimize unless you really want to

How many tiles are on screen?

Or is it 3d

That's a little more concerning

1s

Greatly depends on how much you need to have generated

If it's just at the start of the game then fuck it
If it's continously then it's questionable

[gusty fiber]

Just hide the initial load behind a loading screen

Minecraft has a loading screen during the initial load

Also why are you building this nested dictionary instead of just using a Vector3i as a key?