Massive slowdown with Vectors as well as slightly different loop, can't figure out why

[Sze]

In certain situations when the array is big and not accessed via a pointer (explicitly).

My knowledge about that problem isn’t super in-depth, but I think this workaround works reliably, when you encounter the problem:

Slow execution of the program with newest zig version

That looks exactly like it would trigger the issue I linked. It should be fixed by just doing const sc_hist: i32 = (&self.sc_history)[me.toU4()][move.from][move.to]; cm_hist = (&self.sc_counter_table)[p_piece.toU4][parent.to][piece.toU4()][move.to];