Thank you very much for the fast reply!

I will still try to disable SMT. I'd already read in this forum that it might help for AMD processors.
However, I think it would be interesting to note, for other users in the future, that reducing the number of calculated stats results in a building process that holds its speed without a hitch. Also, ram usage is very much under control, peaking in the beginning at around 25gb, but maintaining 4~8gb during the rest of the process.

TLDR: If you can, reduce the number of stats calculated for a reliable and stable build process.

I will comment later with results of disabling SMT! Thank you again for the help!

Hello!

I'm running H2N on a threadripper 3970x, with 256gb of RAM and pure NVME ssd (2tb), and am trying to build stats for a database of around 120gb on a postgresql database (custom).
The process always starts at around 650 hands/s. It then slowly dwindles all the way to less than 100 hands/s. The database has 60M hands so.... It'd take forever. I'm trying to figure out what is happening.
Oh, ram usage only goes up. It got to a point of using all 256gb of ram and around 450gb of pagefile on the ssd!
Would you know what could be the reason?

Thanks!