"Good" is relative but 200+ parts plus the # of parts on your visiting vessel will usually result in poopy performance due to it calculating all the phZzzz...
This mod used to be a godsend but ever since it's basically been left for vaporware, other mods it used have evolved to the point where you can't use it as-is. Lisias for all his good intent hasn't officially picked this up and has a bunch of other things to do so it's the waiting game or someone goes and learns up what you need to learn to rewrite this thing. I don't play this enough anymore to go and learn the things and Lisias' fork reminds me of an old Nintendo where you had to lick the carts, blow in them, tickle the console, promise your first born to Nintendo, etc. to get it to work. :P
I'm expecting KSP 2 before I expect this to be back in working form. :O