I checked, and CrazyStone-57-TiV is using the same neural network and hardware as CrazyStone-18.04. Batch size, cuDNN version, and time management heuristics may have changed, but I expect that strength should be almost identical. CrazyStone-57-TiV may be a little stronger.
So it seems that the rating drift over 3 years is about 450 Elo points, and the "All Time Ranks" are a bit meaningless. Can you produce a list where CrazyStone-57-TiV is renamed to CrazyStone-18.04? It may be enough to fix the drift. I need the machine for something else, so I disconnected the GPU version. CrazyStone-81-15po is running 15 playouts per move on the CPU of a small machine, and will stay. Rémi
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