The mod is really nice with too many features, however i could not do any good machine with it because of lag, servers that use it always have high max_lag and.. makes high fps lose to those with not very good performance, really cool it'd be if it makes.. less lag, i'd never recommend a mod that causes lag..
There is a technic plus mod that focuses on remedying the issues you've mentioned, until the core developers add a difficult form of LuaJIT multithreading, or allow alternative addon subsystems using other embeddable scripting languages which easily support parallelism, error handling, borrowing, memory management, and JIT versus AoT compilation.
See here: https://content.minetest.net/packages/mt-mods/technic_plus/
You can take notes on the methods in which they use to reduce lag and improve the functioning of the mod and systems and servers. Namely: 'polyfuse & globalstep execution', no 'forceloading', 'refactored netcode', reducing activeobjects and animations, reduced thrashing of registered entities, and optimizing looping scripts.