> GPUs are optimized to suit common workloads and, quite predictably, aren’t optimized to suit uncommon workloads. That doesn't explain why there are such dras

> GPUs are optimized to suit common workloads and, quite predictably, aren’t optimized to suit uncommon workloads. That doesn't explain why there are such drastic performance differences between GPUs on same uarch. It shouldn't perform better on clearly worse GPUs. > We don’t have the explanation for why here, but I see no reason to conclude that it must be poorly written software just because the performance characteristics are unintuitive. I'm not saying that it `must` be poorly written software. I'm just saying that it's `likely`, given niche nature of this software. If performance is affected by some unusual factor they have to clearly indicate that.