Well described mining in this article https://thecoinshark.net/solo-mining-a- ... -and-cons/. We approached the matter seriously. Disassembled + and -, and all in very simple words, and the child will understand@jtoomim I tried the fix, indeed performance improved quite a bit. I'm not benchmarking but CPU use seemed not saturated anymore under larger blocks. Wonder if there are other performance fixes.