I’m over 5,500 hours of efficiency workings.

Mods. Mods are all it is.

Bob Angels is such an amazing modpack to do (expect 120 hours roughly for a full run).

Seablock is the next step up (300 hours to finish).

Then space exploration. That just goes hard for 500 hours easy.

I’ve taken a big break since a SE finish so that I have that 'omg this game is amazing" when the DLC comes out.