A hundred and fifty days took me to get the next upgrade of the device. The sixth one. It was necessary to pursue my goal of creating golems because I needed the fourth tier of the 'Infuser' class to get the necessary expertise to even try.
So after initial investments in the class, I switched completely to chasing that upgrade. I was pushing myself quite hard because this whole hunting started to be quite exhausting. My clear speed without motivation got slower, and I quite often found myself playing with monsters instead of getting rid of the as fast as possible.
I managed to get all 'Artificer' artificer skills to the next level, before realizing there was no way for me to gain the evolution any time soon. Instinctive thought was once again, to use the crystals gained from ghosts, but I prevented myself from doing that, instead, I paused the whole 'golem creator' idea, to first prepare the environment for it.