Why do you keep getting slow corner batches? This was a problem with the SP10 as well.
Several lots of the Hammers were indeed slow. The problem is much more acute with the first lots of RockerBox.
In general, TSMC 40G Gaussian is much more narrower than TSMC 28 HPM Gaussian.
Which means that 28 HPM ASICs can be extreme slow but still within TSMC acceptance criteria.