It is running full multithreaded (32 in my case), I didnt tell it didnt 
2k - 2.8 seconds, 4k 25 seconds, 8k this time cca 10 minutes. Preparation phase was something like 9:50. So this single device + other expanders are taking more than 1/2 of whole 8k build (many erosions, water, etc, cca 100 devices):
1 Like