Just a heads up to players and server admins: I'll be adding a PCU value in for this mod soon.
If you are not aware, PCU stands for Performance Cost Unit, and is a measure of block performance in a world, where the reference is 100k PCU per world.

I'm not sure what's a good value, but given how hard this is on servers, I'm considering high values to start with. Something like 1000 for the base drill, 2000 for the turret (auto-mining in particular is the main problem). For comparison the standard large ship drill is 190.

Keep in mind, despite the performance impact of this mod, I still plan to improve it as best I can. However I think adding a PCU limit will give significant help to admins regardless of the value it is set to, or changes over time to it.

I'm open to suggestions.
If any server admins have ideas of what might be a good value, based on your experience, pelase comment in here.

One option is a dynamic PCU, that server owners can set themselves. Though I would like a decent base value as well.

EDIT:
I've done some preliminary tests, and based on the worst case CPU usage I'm seeing, the base drill should be set to 1000, and the turret should be set to 3000.
The turret is much higher than I expected, and I will need to figure out what's going on with that.