[theevilsharpie]

AMD-based AWS instances are running on first-generation Epyc processors.

Compared to the second-generation Epyc processors that Google is using, the first generation has lower clock speeds, can execute fewer instructions per clock (particularly in terms of floating-point operations), has substantially less cache, and has a more complicated memory topology that can negatively impact the performance of workloads that aren't NUMA-aware.

In short, your experience with AMD in AWS isn't relevant to Google's offerings.