I'm continuing to be impressed by this mod and how well it's holding up with a lot of mining! I've got 15-20k drones now, with I expect about half running at a time, and the update time is well under 1ms.
I am having a bit of a problem with the bots struggling to mine through a smelting line. I've got Squeak Through installed so they should theoretically be able to filter through the furnaces and assemblers, but the bots really struggle, especially when I add thousands of them to one patch! As always, I quite accept if this is simply pushing the mod beyond what is reasonable.
Here's the save file if you want to play with it:
https://drive.google.com/file/d/1Kjg0fVA1a4yBQDR9ObKh3XQhAE7nJa9p/view?usp=sharing