[negativeonehalf]

They optimize using a fast heuristic based on wirelength, congestion, and density, but they evaluate with full P&R. It is definitely interesting that they get good timing without explicitly including it in their reward function!

[gabegobblegoldi]

Interesting == Suspicious? I think this is a big red flag to those in the know.

[ithkuil]

Yeah; it means the heuristic they use is a good one